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Pérez-Vidal RM, Gadea A, Domingo-Pardo C, Gargano A, Valiente-Dobón JJ, Clément E, Lemasson A, Coraggio L, Siciliano M, Szilner S, Bast M, Braunroth T, Collado J, Corina A, Dewald A, Doncel M, Dudouet J, de France G, Fransen C, González V, Hüyük T, Jacquot B, John PR, Jungclaus A, Kim YH, Korichi A, Labiche M, Lenzi S, Li H, Ljungvall J, López-Martens A, Mengoni D, Michelagnoli C, Müller-Gatermann C, Napoli DR, Navin A, Quintana B, Ramos D, Rejmund M, Sanchis E, Simpson J, Stezowski O, Wilmsen D, Zielińska M, Boston AJ, Barrientos D, Bednarczyk P, Benzoni G, Birkenbach B, Boston HC, Bracco A, Cederwall B, Cullen DM, Didierjean F, Eberth J, Gottardo A, Goupil J, Harkness-Brennan LJ, Hess H, Judson DS, Kaşkaş A, Korten W, Leoni S, Menegazzo R, Million B, Nyberg J, Podolyak Z, Pullia A, Ralet D, Recchia F, Reiter P, Rezynkina K, Salsac MD, Şenyiğit M, Sohler D, Theisen C, Verney D. Evidence of Partial Seniority Conservation in the πg_{9/2} Shell for the N=50 Isotones. Phys Rev Lett 2022; 129:112501. [PMID: 36154392 DOI: 10.1103/physrevlett.129.112501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 02/08/2022] [Accepted: 07/29/2022] [Indexed: 06/16/2023]
Abstract
The reduced transition probabilities for the 4_{1}^{+}→2_{1}^{+} and 2_{1}^{+}→0_{1}^{+} transitions in ^{92}Mo and ^{94}Ru and for the 4_{1}^{+}→2_{1}^{+} and 6_{1}^{+}→4_{1}^{+} transitions in ^{90}Zr have been determined in this experiment making use of a multinucleon transfer reaction. These results have been interpreted on the basis of realistic shell-model calculations in the f_{5/2}, p_{3/2}, p_{1/2}, and g_{9/2} proton valence space. Only the combination of extensive lifetime information and large scale shell-model calculations allowed the extent of the seniority conservation in the N=50 g_{9/2} orbital to be understood. The conclusion is that seniority is largely conserved in the first πg_{9/2} orbital.
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Affiliation(s)
- R M Pérez-Vidal
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Valencia E-46980, Spain
- INFN Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - A Gadea
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Valencia E-46980, Spain
| | - C Domingo-Pardo
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Valencia E-46980, Spain
| | - A Gargano
- INFN Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli, Italy
| | | | - E Clément
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - A Lemasson
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - L Coraggio
- INFN Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli, Italy
- Dipartimento di Matematica e Fisica, Università degli Studi della Campania "Luigi Vanvitelli", viale Abramo Lincoln 5, I-81100 Caserta, Italy
| | - M Siciliano
- Physics Division, Argonne National Laboratory, Lemont, 60439 Illinois, USA
| | - S Szilner
- Ruder Bošković Institute, 10000 Zagreb, Croatia
| | - M Bast
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - T Braunroth
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - J Collado
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, E-46100 Valencia, Spain
| | - A Corina
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia BC V5A 1S6, Canada
| | - A Dewald
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - M Doncel
- Department of Physics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - J Dudouet
- Université Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, F-69622 Villeurbanne, France
| | - G de France
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - C Fransen
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - V González
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, E-46100 Valencia, Spain
| | - T Hüyük
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Valencia E-46980, Spain
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - B Jacquot
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - P R John
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - Y H Kim
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
- Institut Laue-Langevin, 71 Avenue des Martyrs, 38042 Grenoble, France
| | - A Korichi
- IJCLab Orsay, IN2P3-CNRS, Université Paris-Saclay and Université Paris-Sud, 91405 Orsay, France
| | - M Labiche
- STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - S Lenzi
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35131 Padova, Italy
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - H Li
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - J Ljungvall
- IJCLab Orsay, IN2P3-CNRS, Université Paris-Saclay and Université Paris-Sud, 91405 Orsay, France
| | - A López-Martens
- IJCLab Orsay, IN2P3-CNRS, Université Paris-Saclay and Université Paris-Sud, 91405 Orsay, France
| | - D Mengoni
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35131 Padova, Italy
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - C Michelagnoli
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
- Institut Laue-Langevin, 71 Avenue des Martyrs, 38042 Grenoble, France
| | - C Müller-Gatermann
- Physics Division, Argonne National Laboratory, Lemont, 60439 Illinois, USA
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - D R Napoli
- INFN Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - A Navin
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - B Quintana
- Laboratorio de Radiaciones Ionizantes, Universidad de Salamanca, E-37008 Salamanca, Spain
| | - D Ramos
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - M Rejmund
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - E Sanchis
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, E-46100 Valencia, Spain
| | - J Simpson
- STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - O Stezowski
- Université Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, F-69622 Villeurbanne, France
| | - D Wilmsen
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - M Zielińska
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A J Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | | | - P Bednarczyk
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | - G Benzoni
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - H C Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - A Bracco
- INFN Sezione di Milano, I-20133 Milano, Italy
- Dipartimento di Fisica, Università di Milano, I-20133 Milano, Italy
| | - B Cederwall
- Department of Physics, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - D M Cullen
- Nuclear Physics Group, Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom
| | - F Didierjean
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - A Gottardo
- INFN Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - J Goupil
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - L J Harkness-Brennan
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - A Kaşkaş
- Department of Physics, Ankara University, 06100 Besevler-Ankara, Turkey
| | - W Korten
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Leoni
- INFN Sezione di Milano, I-20133 Milano, Italy
- Dipartimento di Fisica, Università di Milano, I-20133 Milano, Italy
| | - R Menegazzo
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - B Million
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - J Nyberg
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - Zs Podolyak
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - A Pullia
- INFN Sezione di Milano, I-20133 Milano, Italy
- Dipartimento di Fisica, Università di Milano, I-20133 Milano, Italy
| | - D Ralet
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, F-14076 Caen cedex 5, France
| | - F Recchia
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35131 Padova, Italy
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - K Rezynkina
- INFN Sezione di Padova, I-35131 Padova, Italy
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - M D Salsac
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Şenyiğit
- Department of Physics, Ankara University, 06100 Besevler-Ankara, Turkey
| | - D Sohler
- Institute for Nuclear Research, Atomki, 4001 Debrecen, P.O. Box 51, Hungary
| | - Ch Theisen
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - D Verney
- IJCLab Orsay, IN2P3-CNRS, Université Paris-Saclay and Université Paris-Sud, 91405 Orsay, France
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2
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Wimmer K, Korten W, Doornenbal P, Arici T, Aguilera P, Algora A, Ando T, Baba H, Blank B, Boso A, Chen S, Corsi A, Davies P, de Angelis G, de France G, Delaroche JP, Doherty DT, Gerl J, Gernhäuser R, Girod M, Jenkins D, Koyama S, Motobayashi T, Nagamine S, Niikura M, Obertelli A, Libert J, Lubos D, Rodríguez TR, Rubio B, Sahin E, Saito TY, Sakurai H, Sinclair L, Steppenbeck D, Taniuchi R, Wadsworth R, Zielinska M. Shape Changes in the Mirror Nuclei ^{70}Kr and ^{70}Se. Phys Rev Lett 2021; 126:072501. [PMID: 33666458 DOI: 10.1103/physrevlett.126.072501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/25/2020] [Accepted: 01/05/2021] [Indexed: 06/12/2023]
Abstract
We studied the proton-rich T_{z}=-1 nucleus ^{70}Kr through inelastic scattering at intermediate energies in order to extract the reduced transition probability, B(E2;0^{+}→2^{+}). Comparison with the other members of the A=70 isospin triplet, ^{70}Br and ^{70}Se, studied in the same experiment, shows a 3σ deviation from the expected linearity of the electromagnetic matrix elements as a function of T_{z}. At present, no established nuclear structure theory can describe this observed deviation quantitatively. This is the first violation of isospin symmetry at this level observed in the transition matrix elements. A heuristic approach may explain the anomaly by a shape change between the mirror nuclei ^{70}Kr and ^{70}Se contrary to the model predictions.
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Affiliation(s)
- K Wimmer
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - W Korten
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - P Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Arici
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
- Justus-Liebig-Universität Giessen, D-35392 Giessen, Germany
| | - P Aguilera
- Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago, Chile
| | - A Algora
- Instituto de Fisica Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
- Institute of Nuclear Research of the Hungarian Academy of Sciences, Debrecen H-4026, Hungary
| | - T Ando
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - B Blank
- CENBG, CNRS/IN2P3, Université de Bordeaux, F-33175 Gradignan, France
| | - A Boso
- Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy
| | - S Chen
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - P Davies
- Department of Physics, University of York, YO10 5DD York, United Kingdom
| | - G de Angelis
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - G de France
- GANIL, CEA/DSM-CNRS/IN2P3, F-14076 Caen Cedex 05, France
| | | | - D T Doherty
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Gerl
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
| | - R Gernhäuser
- Physik Department, Technische Universität München, D-85748 Garching, Germany
| | - M Girod
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - D Jenkins
- Department of Physics, University of York, YO10 5DD York, United Kingdom
| | - S Koyama
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Nagamine
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - M Niikura
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - A Obertelli
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Libert
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - D Lubos
- Physik Department, Technische Universität München, D-85748 Garching, Germany
| | - T R Rodríguez
- Departamento de Física Teórica and Centro de Investigación Avanzada en Física Fundamental, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
| | - B Rubio
- Instituto de Fisica Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - E Sahin
- Department of Physics, University of Oslo, PO Box 1048 Blindern, N-0316 Oslo, Norway
| | - T Y Saito
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H Sakurai
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - L Sinclair
- Department of Physics, University of York, YO10 5DD York, United Kingdom
| | - D Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - R Taniuchi
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - R Wadsworth
- Department of Physics, University of York, YO10 5DD York, United Kingdom
| | - M Zielinska
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
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3
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Cederwall B, Liu X, Aktas Ö, Ertoprak A, Zhang W, Qi C, Clément E, de France G, Ralet D, Gadea A, Goasduff A, Jaworski G, Kuti I, Nyakó BM, Nyberg J, Palacz M, Wadsworth R, Valiente-Dobón JJ, Al-Azri H, Ataç Nyberg A, Bäck T, de Angelis G, Doncel M, Dudouet J, Gottardo A, Jurado M, Ljungvall J, Mengoni D, Napoli DR, Petrache CM, Sohler D, Timár J, Barrientos D, Bednarczyk P, Benzoni G, Birkenbach B, Boston AJ, Boston HC, Burrows I, Charles L, Ciemala M, Crespi FCL, Cullen DM, Désesquelles P, Domingo-Pardo C, Eberth J, Erduran N, Ertürk S, González V, Goupil J, Hess H, Huyuk T, Jungclaus A, Korten W, Lemasson A, Leoni S, Maj A, Menegazzo R, Million B, Perez-Vidal RM, Podolyak Z, Pullia A, Recchia F, Reiter P, Saillant F, Salsac MD, Sanchis E, Simpson J, Stezowski O, Theisen C, Zielińska M. Isospin Properties of Nuclear Pair Correlations from the Level Structure of the Self-Conjugate Nucleus ^{88}Ru. Phys Rev Lett 2020; 124:062501. [PMID: 32109090 DOI: 10.1103/physrevlett.124.062501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/27/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
The low-lying energy spectrum of the extremely neutron-deficient self-conjugate (N=Z) nuclide _{44}^{88}Ru_{44} has been measured using the combination of the Advanced Gamma Tracking Array (AGATA) spectrometer, the NEDA and Neutron Wall neutron detector arrays, and the DIAMANT charged particle detector array. Excited states in ^{88}Ru were populated via the ^{54}Fe(^{36}Ar,2nγ)^{88}Ru^{*} fusion-evaporation reaction at the Grand Accélérateur National d'Ions Lourds (GANIL) accelerator complex. The observed γ-ray cascade is assigned to ^{88}Ru using clean prompt γ-γ-2-neutron coincidences in anticoincidence with the detection of charged particles, confirming and extending the previously assigned sequence of low-lying excited states. It is consistent with a moderately deformed rotating system exhibiting a band crossing at a rotational frequency that is significantly higher than standard theoretical predictions with isovector pairing, as well as observations in neighboring N>Z nuclides. The direct observation of such a "delayed" rotational alignment in a deformed N=Z nucleus is in agreement with theoretical predictions related to the presence of strong isoscalar neutron-proton pair correlations.
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Affiliation(s)
- B Cederwall
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - X Liu
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - Ö Aktas
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - A Ertoprak
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
- Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, 34134 Istanbul, Turkey
| | - W Zhang
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - C Qi
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - E Clément
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - G de France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - D Ralet
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - A Gadea
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46980 Valencia, Spain
| | - A Goasduff
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - G Jaworski
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
- Heavy Ion Laboratory, University of Warsaw, ul. Pasteura 5A,02-093 Warszawa, Poland
| | - I Kuti
- MTA Atomki, H-4001 Debrecen, Hungary
| | - B M Nyakó
- MTA Atomki, H-4001 Debrecen, Hungary
| | - J Nyberg
- Department of Physics and Astronomy, Uppsala University, SE-75121 Uppsala, Sweden
| | - M Palacz
- Heavy Ion Laboratory, University of Warsaw, ul. Pasteura 5A,02-093 Warszawa, Poland
| | - R Wadsworth
- Department of Physics, University of York, Heslington, York, YO10 5DD, United Kingdom
| | - J J Valiente-Dobón
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - H Al-Azri
- Rustaq College of Education, Department of Science, 329 Al-Rustaq, Sultanate of Oman
| | - A Ataç Nyberg
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - T Bäck
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - G de Angelis
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - M Doncel
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - J Dudouet
- Université Lyon, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - A Gottardo
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - M Jurado
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46980 Valencia, Spain
| | - J Ljungvall
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - D Mengoni
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - D R Napoli
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - C M Petrache
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - D Sohler
- MTA Atomki, H-4001 Debrecen, Hungary
| | - J Timár
- MTA Atomki, H-4001 Debrecen, Hungary
| | | | - P Bednarczyk
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | - G Benzoni
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany
| | - A J Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - H C Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - I Burrows
- STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom
| | - L Charles
- IPHC, UNISTRA, CNRS, 23 rue du Loess, 67200 Strasbourg, France
| | - M Ciemala
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | - F C L Crespi
- University of Milano, Department of Physics, I-20133 Milano, Italy
- INFN Milano, I-20133 Milano, Italy
| | - D M Cullen
- Nuclear Physics Group, Schuster Laboratory, University of Manchester, Manchester, M13 9PL, United Kingdom
| | - P Désesquelles
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
- CNRS-IN2P3, Universiteé Paris-Saclay, Bat 104, F-91405 Orsay Campus, France
| | - C Domingo-Pardo
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany
| | - N Erduran
- Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, 34303, Istanbul, Turkey
| | - S Ertürk
- Department of Physics, University of Nigde, 51240 Nigde, Turkey
| | - V González
- Departamento de Ingeniería Electrónica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
| | - J Goupil
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany
| | - T Huyuk
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46980 Valencia, Spain
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - W Korten
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Lemasson
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - S Leoni
- University of Milano, Department of Physics, I-20133 Milano, Italy
- INFN Milano, I-20133 Milano, Italy
| | - A Maj
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | | | | | - R M Perez-Vidal
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - Zs Podolyak
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
| | - A Pullia
- University of Milano, Department of Physics, I-20133 Milano, Italy
- INFN Milano, I-20133 Milano, Italy
| | - F Recchia
- Dipartimento di Fisica e Astronomia dell'Università di Padova and INFN Padova, I-35131 Padova, Italy
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany
| | - F Saillant
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - M D Salsac
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - E Sanchis
- Departamento de Ingeniería Electrónica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
| | - J Simpson
- STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom
| | - O Stezowski
- Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - Ch Theisen
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Zielińska
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
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4
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Delafosse C, Verney D, Marević P, Gottardo A, Michelagnoli C, Lemasson A, Goasduff A, Ljungvall J, Clément E, Korichi A, De Angelis G, Andreoiu C, Babo M, Boso A, Didierjean F, Dudouet J, Franchoo S, Gadea A, Georgiev G, Ibrahim F, Jacquot B, Konstantinopoulos T, Lenzi SM, Maquart G, Matea I, Mengoni D, Napoli DR, Nikšić T, Olivier L, Pérez-Vidal RM, Portail C, Recchia F, Redon N, Siciliano M, Stefan I, Stezowski O, Vretenar D, Zielinska M, Barrientos D, Benzoni G, Birkenbach B, Boston AJ, Boston HC, Cederwall B, Charles L, Ciemala M, Collado J, Cullen DM, Désesquelles P, de France G, Domingo-Pardo C, Eberth J, González V, Harkness-Brennan LJ, Hess H, Judson DS, Jungclaus A, Korten W, Lefevre A, Legruel F, Menegazzo R, Million B, Nyberg J, Quintana B, Ralet D, Reiter P, Saillant F, Sanchis E, Theisen C, Valiente Dobon JJ. Pseudospin Symmetry and Microscopic Origin of Shape Coexistence in the ^{78}Ni Region: A Hint from Lifetime Measurements. Phys Rev Lett 2018; 121:192502. [PMID: 30468583 DOI: 10.1103/physrevlett.121.192502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 08/27/2018] [Indexed: 06/09/2023]
Abstract
Lifetime measurements of excited states of the light N=52 isotones ^{88}Kr, ^{86}Se, and ^{84}Ge have been performed, using the recoil distance Doppler shift method and VAMOS and AGATA spectrometers for particle identification and gamma spectroscopy, respectively. The reduced electric quadrupole transition probabilities B(E2;2^{+}→0^{+}) and B(E2;4^{+}→2^{+}) were obtained for the first time for the hard-to-reach ^{84}Ge. While the B(E2;2^{+}→0^{+}) values of ^{88}Kr, ^{86}Se saturate the maximum quadrupole collectivity offered by the natural valence (3s, 2d, 1g_{7/2}, 1h_{11/2}) space of an inert ^{78}Ni core, the value obtained for ^{84}Ge largely exceeds it, suggesting that shape coexistence phenomena, previously reported at N≲49, extend beyond N=50. The onset of collectivity at Z=32 is understood as due to a pseudo-SU(3) organization of the proton single-particle sequence reflecting a clear manifestation of pseudospin symmetry. It is realized that the latter provides actually reliable guidance for understanding the observed proton and neutron single particle structure in the whole medium-mass region, from Ni to Sn, pointing towards the important role of the isovector-vector ρ field in shell-structure evolution.
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Affiliation(s)
- C Delafosse
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - D Verney
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - P Marević
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - A Gottardo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - C Michelagnoli
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - A Lemasson
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - A Goasduff
- Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - J Ljungvall
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - E Clément
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - A Korichi
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - G De Angelis
- Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - C Andreoiu
- Departement of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A S16, Canada
| | - M Babo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - A Boso
- Departimento di Fisica e Astronomia, Università di Padova, and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - F Didierjean
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - J Dudouet
- Université Lyon, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - S Franchoo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - A Gadea
- IFIC, CSIC-Universitat Valencia, Apartado Oficial 22085, 46071 Valencia, Spain
| | - G Georgiev
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - F Ibrahim
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - B Jacquot
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - T Konstantinopoulos
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - S M Lenzi
- Departimento di Fisica e Astronomia, Università di Padova, and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - G Maquart
- Université Lyon, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - I Matea
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - D Mengoni
- Departimento di Fisica e Astronomia, Università di Padova, and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - D R Napoli
- Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - T Nikšić
- Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, Croatia
| | - L Olivier
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - R M Pérez-Vidal
- IFIC, CSIC-Universitat Valencia, Apartado Oficial 22085, 46071 Valencia, Spain
| | - C Portail
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - F Recchia
- Departimento di Fisica e Astronomia, Università di Padova, and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - N Redon
- Université Lyon, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - M Siciliano
- Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - I Stefan
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - O Stezowski
- Université Lyon, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - D Vretenar
- Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, Croatia
| | - M Zielinska
- CEA de Saclay, IRFU, F-91191 Gif-sur-Yvette, France
| | | | - G Benzoni
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - A J Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - H C Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - B Cederwall
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - L Charles
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - M Ciemala
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | - J Collado
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, Valencia 46100, Spain
| | - D M Cullen
- Nuclear Physics Group, Schuster Laboratory, University of Manchester, Manchester, M13 9PL, United Kingdom
| | - P Désesquelles
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - G de France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - C Domingo-Pardo
- IFIC, CSIC-Universitat Valencia, Apartado Oficial 22085, 46071 Valencia, Spain
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - V González
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, Valencia 46100, Spain
| | - L J Harkness-Brennan
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - W Korten
- CEA de Saclay, IRFU, F-91191 Gif-sur-Yvette, France
| | - A Lefevre
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - F Legruel
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - R Menegazzo
- Departimento di Fisica e Astronomia, Università di Padova, and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - B Million
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - J Nyberg
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - B Quintana
- Laboratorio de Radiaciones Ionizantes, Universidad de Salamanca, E-37008 Salamanca, Spain
| | - D Ralet
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - F Saillant
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - E Sanchis
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, Valencia 46100, Spain
| | - Ch Theisen
- CEA de Saclay, IRFU, F-91191 Gif-sur-Yvette, France
| | - J J Valiente Dobon
- Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
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Singh P, Korten W, Hagen TW, Görgen A, Grente L, Salsac MD, Farget F, Clément E, de France G, Braunroth T, Bruyneel B, Celikovic I, Delaune O, Dewald A, Dijon A, Delaroche JP, Girod M, Hackstein M, Jacquot B, Libert J, Litzinger J, Ljungvall J, Louchart C, Gottardo A, Michelagnoli C, Müller-Gatermann C, Napoli DR, Otsuka T, Pillet N, Recchia F, Rother W, Sahin E, Siem S, Sulignano B, Togashi T, Tsunoda Y, Theisen C, Valiente-Dobon JJ. Evidence for Coexisting Shapes through Lifetime Measurements in ^{98}Zr. Phys Rev Lett 2018; 121:192501. [PMID: 30468600 DOI: 10.1103/physrevlett.121.192501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 09/21/2018] [Indexed: 06/09/2023]
Abstract
The lifetimes of the first excited 2^{+}, 4^{+}, and 6^{+} states in ^{98}Zr were measured with the recoil-distance Doppler shift method in an experiment performed at GANIL. Excited states in ^{98}Zr were populated using the fission reaction between a 6.2 MeV/u ^{238}U beam and a ^{9}Be target. The γ rays were detected with the EXOGAM array in correlation with the fission fragments identified by mass and atomic number in the VAMOS++ spectrometer. Our result shows a very small B(E2;2_{1}^{+}→0_{1}^{+}) value in ^{98}Zr, thereby confirming the very sudden onset of collectivity at N=60. The experimental results are compared to large-scale Monte Carlo shell model and beyond-mean-field calculations. The present results indicate the coexistence of two additional deformed shapes in this nucleus along with the spherical ground state.
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Affiliation(s)
- Purnima Singh
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - W Korten
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - T W Hagen
- Department of Physics, University of Oslo, Oslo N-0316, Norway
| | - A Görgen
- Department of Physics, University of Oslo, Oslo N-0316, Norway
| | - L Grente
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M-D Salsac
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - F Farget
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - E Clément
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - G de France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - T Braunroth
- Institut für Kernphysik, Universität zu Köln, Köln D-50937, Germany
| | - B Bruyneel
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - I Celikovic
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
- Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade 11000, Serbia
| | - O Delaune
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - A Dewald
- Institut für Kernphysik, Universität zu Köln, Köln D-50937, Germany
| | - A Dijon
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | | | - M Girod
- CEA, DAM, DIF, 91297 Arpajon, France
| | - M Hackstein
- Institut für Kernphysik, Universität zu Köln, Köln D-50937, Germany
| | - B Jacquot
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - J Libert
- CEA, DAM, DIF, 91297 Arpajon, France
| | - J Litzinger
- Institut für Kernphysik, Universität zu Köln, Köln D-50937, Germany
| | | | - C Louchart
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gottardo
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - C Michelagnoli
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | | | - D R Napoli
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - T Otsuka
- Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-0033, Japan
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Instituut voor Kern- en Stralingsfysica, KU Leuven, B-3001 Leuven, Belgium
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - N Pillet
- CEA, DAM, DIF, 91297 Arpajon, France
| | - F Recchia
- Dipartimento di Fisica e Astronomia "Galileo Galilei", Università degli Studi di Padova and INFN Padova, I-35131 Padova, Italy
| | - W Rother
- Institut für Kernphysik, Universität zu Köln, Köln D-50937, Germany
| | - E Sahin
- Department of Physics, University of Oslo, Oslo N-0316, Norway
| | - S Siem
- Department of Physics, University of Oslo, Oslo N-0316, Norway
| | - B Sulignano
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - T Togashi
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-0033, Japan
| | - Y Tsunoda
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-0033, Japan
| | - Ch Theisen
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
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Ansari S, Régis JM, Jolie J, Saed-Samii N, Warr N, Korten W, Zielińska M, Salsac MD, Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, Simpson G, Drouet F, Vancraeyenest A, de France G, Clément E, Stezowski O, Ur C, Urban W, Regan P, Podolyák Z, Larijani C, Townsley C, Carroll R, Wilson E, Mach H, Fraile L, Paziy V, Olaizola B, Vedia V, Bruce A, Roberts O, Smith J, Scheck M, Kröll T, Hartig AL, Ignatov A, Ilieva S, Lalkovski S, Mărginean N, Otsuka T, Shimizu N, Togashi T, Tsunoda Y. Lifetime measurement in neutron-rich A~100 nuclei. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201819305003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Lifetimes of excited states of the 98;100;102Zr nuclei were measured by using the Generalized Centroid Difference Method. The nuclei of interest were populated via neutron-induced fission of 241Pu and 235U during the EXILL-FATIMA campaign. The obtained lifetimes were used to calculate the B(E2) transition strengths and β deformation parameters which were then compared with the recent theoretical predictions obtained with Monte Carlo Shell Model.
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7
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Régis JM, Simpson G, Mach H, Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, de France G, Ur C, Urban W, Jolie J, Saed-Samii N, Warr N, Fraile L, Paziy V, Regan P, Podolyák Z, Lalkovski S, Bruce A, Kröll T, Korten W, Marginean N. The γ-γ fast-timing technique and the EXILL&FATIMA campaign. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201819304008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
At the Institut Laue-Langevin in Grenoble, germanium-gated γ-γ fast-timing lifetime measurements of nuclear excited states in neutron-rich nuclei have been performed within a prompt γ-ray spectroscopy experimental campaign. We report on results obtained from the cold-neutron induced fission of 235U. The excited secondary fission products were stopped almost instantaneously within the thick target and the γ rays emitted were collected triggerlessly using the EXILL&FATIMA mixed array of HPGe and LaBr3(Ce) detectors. Precise lifetimes could be determined by analysing the γ-γ time difference spectra using the generalized centroid difference method. This picosecondsensitive method provides many advantages and is briefly explained. Still, the major source of systematic errors is related to the contribution of time-correlated Compton background. The EXILL&FATIMA results are discussed with respect to the typical energy-dependent timing behaviour of the background. According to the time response of the background, appropriate methods and a time correction for the sub-nanosecond regime are proposed.
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8
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Dudouet J, Lemasson A, Duchêne G, Rejmund M, Clément E, Michelagnoli C, Didierjean F, Korichi A, Maquart G, Stezowski O, Lizarazo C, Pérez-Vidal RM, Andreoiu C, de Angelis G, Astier A, Delafosse C, Deloncle I, Dombradi Z, de France G, Gadea A, Gottardo A, Jacquot B, Jones P, Konstantinopoulos T, Kuti I, Le Blanc F, Lenzi SM, Li G, Lozeva R, Million B, Napoli DR, Navin A, Petrache CM, Pietralla N, Ralet D, Ramdhane M, Redon N, Schmitt C, Sohler D, Verney D, Barrientos D, Birkenbach B, Burrows I, Charles L, Collado J, Cullen DM, Désesquelles P, Domingo Pardo C, González V, Harkness-Brennan L, Hess H, Judson DS, Karolak M, Korten W, Labiche M, Ljungvall J, Menegazzo R, Mengoni D, Pullia A, Recchia F, Reiter P, Salsac MD, Sanchis E, Theisen C, Valiente-Dobón JJ, Zielińska M. _{36}^{96}Kr_{60}-Low-Z Boundary of the Island of Deformation at N=60. Phys Rev Lett 2017; 118:162501. [PMID: 28474951 DOI: 10.1103/physrevlett.118.162501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Indexed: 06/07/2023]
Abstract
Prompt γ-ray spectroscopy of the neutron-rich ^{96}Kr, produced in transfer- and fusion-induced fission reactions, has been performed using the combination of the Advanced Gamma Tracking Array and the VAMOS++ spectrometer. A second excited state, assigned to J^{π}=4^{+}, is observed for the first time, and a previously reported level energy of the first 2^{+} excited state is confirmed. The measured energy ratio R_{4/2}=E(4^{+})/E(2^{+})=2.12(1) indicates that this nucleus does not show a well-developed collectivity contrary to that seen in heavier N=60 isotones. This new measurement highlights an abrupt transition of the degree of collectivity as a function of the proton number at Z=36, of similar amplitude to that observed at N=60 at higher Z values. A possible reason for this abrupt transition could be related to the insufficient proton excitations in the g_{9/2}, d_{5/2}, and s_{1/2} orbitals to generate strong quadrupole correlations or to the coexistence of competing different shapes. An unexpected continuous decrease of R_{4/2} as a function of the neutron number up to N=60 is also evidenced. This measurement establishes the Kr isotopic chain as the low-Z boundary of the island of deformation for N=60 isotones. A comparison with available theoretical predictions using different beyond mean-field approaches shows that these models fail to reproduce the abrupt transitions at N=60 and Z=36.
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Affiliation(s)
- J Dudouet
- Université, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622 Villeurbanne, France
| | - A Lemasson
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - G Duchêne
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - M Rejmund
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - E Clément
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - C Michelagnoli
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - F Didierjean
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - A Korichi
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - G Maquart
- Université, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622 Villeurbanne, France
| | - O Stezowski
- Université, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622 Villeurbanne, France
| | - C Lizarazo
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- GSI, Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - R M Pérez-Vidal
- Instituto de Física Corpuscular, CSIC-Universitat de València, E-46980 Valencia, Spain
| | - C Andreoiu
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - G de Angelis
- INFN, Laboratori Nazionali di Legnaro, Via Romea 4, I-35020 Legnaro, Italy
| | - A Astier
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - C Delafosse
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris Sud, Université Paris Saclay, 91406 Orsay Cedex, France
| | - I Deloncle
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - Z Dombradi
- Institute for Nuclear Research of the Hungarian Academy of Sciences, Pf. 51, H-4001 Debrecen, Hungary
| | - G de France
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - A Gadea
- Instituto de Física Corpuscular, CSIC-Universitat de València, E-46980 Valencia, Spain
| | - A Gottardo
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris Sud, Université Paris Saclay, 91406 Orsay Cedex, France
| | - B Jacquot
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - P Jones
- iThemba LABS, National Research Foundation, P.O. Box 722, Somerset West, 7129 South Africa
| | - T Konstantinopoulos
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - I Kuti
- Institute for Nuclear Research of the Hungarian Academy of Sciences, Pf. 51, H-4001 Debrecen, Hungary
| | - F Le Blanc
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - S M Lenzi
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35131 Padova, Italy
| | - G Li
- GSI, Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - R Lozeva
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - B Million
- INFN, Sezione di Milano, Milano 20133, Italy
| | - D R Napoli
- INFN, Laboratori Nazionali di Legnaro, Via Romea 4, I-35020 Legnaro, Italy
| | - A Navin
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - C M Petrache
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - N Pietralla
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Ralet
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - M Ramdhane
- LPSC, Université Grenoble-Alpes, CNRS/IN2P3, 38026 Grenoble Cedex, France
| | - N Redon
- Université, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622 Villeurbanne, France
| | - C Schmitt
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - D Sohler
- Institute for Nuclear Research of the Hungarian Academy of Sciences, Pf. 51, H-4001 Debrecen, Hungary
| | - D Verney
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris Sud, Université Paris Saclay, 91406 Orsay Cedex, France
| | | | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - I Burrows
- STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - L Charles
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - J Collado
- Departamento de Ingeniería Electrónica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
| | - D M Cullen
- Nuclear Physics Group, Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom
| | - P Désesquelles
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - C Domingo Pardo
- Instituto de Física Corpuscular, CSIC-Universitat de València, E-46980 Valencia, Spain
| | - V González
- Departamento de Ingeniería Electrónica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
| | - L Harkness-Brennan
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - M Karolak
- IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - W Korten
- IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - M Labiche
- STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - J Ljungvall
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - R Menegazzo
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - D Mengoni
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35131 Padova, Italy
| | - A Pullia
- INFN, Sezione di Milano, Milano 20133, Italy
- Dipartimento di Fisica, Università di Milano, I-20133 Milano, Italy
| | - F Recchia
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35131 Padova, Italy
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - M D Salsac
- IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - E Sanchis
- Departamento de Ingeniería Electrónica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
| | - Ch Theisen
- IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - J J Valiente-Dobón
- INFN, Laboratori Nazionali di Legnaro, Via Romea 4, I-35020 Legnaro, Italy
| | - M Zielińska
- IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
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9
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Podolyák Z, Shand CM, Lalović N, Gerl J, Rudolph D, Alexander T, Boutachkov P, Cortés ML, Górska M, Kojouharov I, Kurz N, Louchart C, Merchán E, Michelagnoli C, Pérez-Vidal RM, Pietri S, Ralet D, Reese M, Schaffner H, Stahl C, Weick H, Ameil F, de Angelis G, Arici T, Carroll R, Dombrádi Z, Gadea A, Golubev P, Lettmann M, Lizarazo C, Mahboub D, Pai H, Patel Z, Pietralla N, Regan PH, Sarmiento LG, Wieland O, Wilson E, Birkenbach B, Bruyneel B, Burrows I, Charles L, Clément E, Crespi FCL, Cullen DM, Désesquelles P, Eberth J, González V, Habermann T, Harkness-Brennan L, Hess H, Judson DS, Jungclaus A, Korten W, Labiche M, Maj A, Mengoni D, Napoli DR, Pullia A, Quintana B, Rainovski G, Reiter P, Salsac MD, Sanchis E, Valiente Dóbon JJ. Role of the Δ Resonance in the Population of a Four-Nucleon State in the ^{56}Fe→^{54}Fe Reaction at Relativistic Energies. Phys Rev Lett 2016; 117:222302. [PMID: 27925748 DOI: 10.1103/physrevlett.117.222302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Indexed: 06/06/2023]
Abstract
The ^{54}Fe nucleus was populated from a ^{56}Fe beam impinging on a Be target with an energy of E/A=500 MeV. The internal decay via γ-ray emission of the 10^{+} metastable state was observed. As the structure of this isomeric state has to involve at least four unpaired nucleons, it cannot be populated in a simple two-neutron removal reaction from the ^{56}Fe ground state. The isomeric state was produced in the low-momentum (-energy) tail of the parallel momentum (energy) distribution of ^{54}Fe, suggesting that it was populated via the decay of the Δ^{0} resonance into a proton. This process allows the population of four-nucleon states, such as the observed isomer. Therefore, it is concluded that the observation of this 10^{+} metastable state in ^{54}Fe is a consequence of the quark structure of the nucleons.
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Affiliation(s)
- Zs Podolyák
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - C M Shand
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - N Lalović
- Department of Physics, Lund University, S-22100 Lund, Sweden
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - J Gerl
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - D Rudolph
- Department of Physics, Lund University, S-22100 Lund, Sweden
| | - T Alexander
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - P Boutachkov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - M L Cortés
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - M Górska
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - I Kojouharov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - N Kurz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - C Louchart
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - E Merchán
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - C Michelagnoli
- GANIL, CEA/DRF-CNRS/IN2P3, F-14076 Caen Cedex 05, France
| | - R M Pérez-Vidal
- Instituto de Fisica Corpuscular, Universitat de Valencia, E-46980 Valencia, Spain
| | - S Pietri
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - D Ralet
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - M Reese
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - H Schaffner
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - Ch Stahl
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - H Weick
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - F Ameil
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - G de Angelis
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - T Arici
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Justus-Liebig-Universität Giessen, D-35392 Giessen, Germany
| | - R Carroll
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Zs Dombrádi
- Institute for Nuclear Research, Hungarian Academy of Sciences, P.O. Box 51, Debrecen H-4001, Hungary
| | - A Gadea
- Instituto de Fisica Corpuscular, Universitat de Valencia, E-46980 Valencia, Spain
| | - P Golubev
- Department of Physics, Lund University, S-22100 Lund, Sweden
| | - M Lettmann
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - C Lizarazo
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - D Mahboub
- Physics Department, University of Hail, PO Box 2440 Hail, Saudi Arabia
| | - H Pai
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - Z Patel
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - N Pietralla
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - P H Regan
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - L G Sarmiento
- Department of Physics, Lund University, S-22100 Lund, Sweden
| | - O Wieland
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - E Wilson
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - B Bruyneel
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - I Burrows
- STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - L Charles
- Institut Pluridisciplinaire Hubert Curien, CNRS-IN2P3, Université de Strasbourg, F-67037 Strasbourg, France
| | - E Clément
- GANIL, CEA/DRF-CNRS/IN2P3, F-14076 Caen Cedex 05, France
| | - F C L Crespi
- INFN, Sezione di Milano, I-20133 Milano, Italy
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - D M Cullen
- School of Physics and Astronomy, Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom
| | - P Désesquelles
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse-CSNSM, CNRS/IN2P3 and University Paris-Sud, F-91405 Orsay Campus, France
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - V González
- Department of Electronic Engineering, University of Valencia, E-46100 Burjassot (Valencia), Spain
| | - T Habermann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - L Harkness-Brennan
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - W Korten
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Labiche
- STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - A Maj
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31-342 Krakow, Poland
| | - D Mengoni
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - D R Napoli
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - A Pullia
- INFN, Sezione di Milano, I-20133 Milano, Italy
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - B Quintana
- Laboratorio de Radiaciones Ionizantes, Universidad de Salamanca, E-37008 Salamanca, Spain
| | - G Rainovski
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - M D Salsac
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - E Sanchis
- Department of Electronic Engineering, University of Valencia, E-46100 Burjassot (Valencia), Spain
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10
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Clément E, Zielińska M, Görgen A, Korten W, Péru S, Libert J, Goutte H, Hilaire S, Bastin B, Bauer C, Blazhev A, Bree N, Bruyneel B, Butler PA, Butterworth J, Delahaye P, Dijon A, Doherty DT, Ekström A, Fitzpatrick C, Fransen C, Georgiev G, Gernhäuser R, Hess H, Iwanicki J, Jenkins DG, Larsen AC, Ljungvall J, Lutter R, Marley P, Moschner K, Napiorkowski PJ, Pakarinen J, Petts A, Reiter P, Renstrøm T, Seidlitz M, Siebeck B, Siem S, Sotty C, Srebrny J, Stefanescu I, Tveten GM, Van de Walle J, Vermeulen M, Voulot D, Warr N, Wenander F, Wiens A, De Witte H, Wrzosek-Lipska K. Erratum: Spectroscopic Quadrupole Moments in ^{96,98}Sr: Evidence for Shape Coexistence in Neutron-Rich Strontium Isotopes at N=60 [Phys. Rev. Lett. 116, 022701 (2016)]. Phys Rev Lett 2016; 117:099902. [PMID: 27610893 DOI: 10.1103/physrevlett.117.099902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Indexed: 06/06/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.116.022701.
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11
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Hadyńska-Klȩk K, Napiorkowski PJ, Zielińska M, Srebrny J, Maj A, Azaiez F, Valiente Dobón JJ, Kicińska-Habior M, Nowacki F, Naïdja H, Bounthong B, Rodríguez TR, de Angelis G, Abraham T, Anil Kumar G, Bazzacco D, Bellato M, Bortolato D, Bednarczyk P, Benzoni G, Berti L, Birkenbach B, Bruyneel B, Brambilla S, Camera F, Chavas J, Cederwall B, Charles L, Ciemała M, Cocconi P, Coleman-Smith P, Colombo A, Corsi A, Crespi FCL, Cullen DM, Czermak A, Désesquelles P, Doherty DT, Dulny B, Eberth J, Farnea E, Fornal B, Franchoo S, Gadea A, Giaz A, Gottardo A, Grave X, Grȩbosz J, Görgen A, Gulmini M, Habermann T, Hess H, Isocrate R, Iwanicki J, Jaworski G, Judson DS, Jungclaus A, Karkour N, Kmiecik M, Karpiński D, Kisieliński M, Kondratyev N, Korichi A, Komorowska M, Kowalczyk M, Korten W, Krzysiek M, Lehaut G, Leoni S, Ljungvall J, Lopez-Martens A, Lunardi S, Maron G, Mazurek K, Menegazzo R, Mengoni D, Merchán E, Mȩczyński W, Michelagnoli C, Mierzejewski J, Million B, Myalski S, Napoli DR, Nicolini R, Niikura M, Obertelli A, Özmen SF, Palacz M, Próchniak L, Pullia A, Quintana B, Rampazzo G, Recchia F, Redon N, Reiter P, Rosso D, Rusek K, Sahin E, Salsac MD, Söderström PA, Stefan I, Stézowski O, Styczeń J, Theisen C, Toniolo N, Ur CA, Vandone V, Wadsworth R, Wasilewska B, Wiens A, Wood JL, Wrzosek-Lipska K, Ziȩbliński M. Superdeformed and Triaxial States in ^{42}Ca. Phys Rev Lett 2016; 117:062501. [PMID: 27541463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Indexed: 06/06/2023]
Abstract
Shape parameters of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in ^{42}Ca were determined from E2 matrix elements measured in the first low-energy Coulomb excitation experiment performed with AGATA. The picture of two coexisting structures is well reproduced by new state-of-the-art large-scale shell model and beyond-mean-field calculations. Experimental evidence for superdeformation of the band built on 0_{2}^{+} has been obtained and the role of triaxiality in the A∼40 mass region is discussed. Furthermore, the potential of Coulomb excitation as a tool to study superdeformation has been demonstrated for the first time.
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Affiliation(s)
- K Hadyńska-Klȩk
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
- Faculty of Physics, University of Warsaw, PL 00-681 Warsaw, Poland
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - P J Napiorkowski
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - M Zielińska
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - J Srebrny
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - A Maj
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - F Azaiez
- Institut de Physique Nucléaire d'Orsay, F-91400 Orsay, France
| | - J J Valiente Dobón
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | | | - F Nowacki
- Université de Strasbourg, IPHC/CNRS, UMR7178, 23 rue du Loess, F-67037 Strasbourg, France
| | - H Naïdja
- Université de Strasbourg, IPHC/CNRS, UMR7178, 23 rue du Loess, F-67037 Strasbourg, France
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- LPMS, Université Constantine 1, Route Ain-El bey, 25000 Constantine, Algeria
| | - B Bounthong
- Université de Strasbourg, IPHC/CNRS, UMR7178, 23 rue du Loess, F-67037 Strasbourg, France
| | - T R Rodríguez
- Universidad Autónoma de Madrid, Departamento de Física Teórica, E-28049 Cantoblanco, Madrid, Spain
| | - G de Angelis
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - T Abraham
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - G Anil Kumar
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - D Bazzacco
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - M Bellato
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - D Bortolato
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - P Bednarczyk
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - G Benzoni
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - L Berti
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - B Bruyneel
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - S Brambilla
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - F Camera
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - J Chavas
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - B Cederwall
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - L Charles
- Université de Strasbourg, IPHC/CNRS, UMR7178, 23 rue du Loess, F-67037 Strasbourg, France
| | - M Ciemała
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - P Cocconi
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - P Coleman-Smith
- Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - A Colombo
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - A Corsi
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - F C L Crespi
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - D M Cullen
- Schuster Laboratory, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - A Czermak
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - P Désesquelles
- Université Paris-Sud, F-91400 Orsay, France
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM/IN2P3/CNRS), F-91405 Orsay, France
| | - D T Doherty
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
- Department of Physics University of York, Heslington, York YO10 5DD, United Kingdom
| | - B Dulny
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - E Farnea
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - B Fornal
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - S Franchoo
- Institut de Physique Nucléaire d'Orsay, F-91400 Orsay, France
| | - A Gadea
- Instituto de Física Corpuscular IFIC, CSIC-University of Valencia, S-46980 Paterna, Valencia, Spain
| | - A Giaz
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - A Gottardo
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - X Grave
- Institut de Physique Nucléaire d'Orsay, F-91400 Orsay, France
| | - J Grȩbosz
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - A Görgen
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - M Gulmini
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - T Habermann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - R Isocrate
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - J Iwanicki
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - G Jaworski
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - N Karkour
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM/IN2P3/CNRS), F-91405 Orsay, France
| | - M Kmiecik
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - D Karpiński
- Faculty of Physics, University of Warsaw, PL 00-681 Warsaw, Poland
| | - M Kisieliński
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - N Kondratyev
- Flerov Laboratory of Nuclear Reactions JINR, RU-141980 Dubna, Russia
| | - A Korichi
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM/IN2P3/CNRS), F-91405 Orsay, France
| | - M Komorowska
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
- Faculty of Physics, University of Warsaw, PL 00-681 Warsaw, Poland
| | - M Kowalczyk
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - W Korten
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - M Krzysiek
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - G Lehaut
- Universite Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France
| | - S Leoni
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - J Ljungvall
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM/IN2P3/CNRS), F-91405 Orsay, France
| | - A Lopez-Martens
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM/IN2P3/CNRS), F-91405 Orsay, France
| | - S Lunardi
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - G Maron
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - K Mazurek
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - R Menegazzo
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - D Mengoni
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - E Merchán
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - W Mȩczyński
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - C Michelagnoli
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - J Mierzejewski
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - B Million
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - S Myalski
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - D R Napoli
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - R Nicolini
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - M Niikura
- Institut de Physique Nucléaire d'Orsay, F-91400 Orsay, France
| | - A Obertelli
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - S F Özmen
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - M Palacz
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - L Próchniak
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - A Pullia
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - B Quintana
- Laboratorio de Radiaciones Ionizantes, Departamento de Física Fundamental, Universidad de Salamanca, E-37008 Salamanca,Spain
| | - G Rampazzo
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - F Recchia
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - N Redon
- Universite Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - D Rosso
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - K Rusek
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - E Sahin
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - M-D Salsac
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - P-A Söderström
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - I Stefan
- Institut de Physique Nucléaire d'Orsay, F-91400 Orsay, France
| | - O Stézowski
- Universite Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France
| | - J Styczeń
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - Ch Theisen
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - N Toniolo
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - C A Ur
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - V Vandone
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - R Wadsworth
- Department of Physics University of York, Heslington, York YO10 5DD, United Kingdom
| | - B Wasilewska
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - A Wiens
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - J L Wood
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA
| | - K Wrzosek-Lipska
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - M Ziȩbliński
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
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12
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Clément E, Zielińska M, Görgen A, Korten W, Péru S, Libert J, Goutte H, Hilaire S, Bastin B, Bauer C, Blazhev A, Bree N, Bruyneel B, Butler PA, Butterworth J, Delahaye P, Dijon A, Doherty DT, Ekström A, Fitzpatrick C, Fransen C, Georgiev G, Gernhäuser R, Hess H, Iwanicki J, Jenkins DG, Larsen AC, Ljungvall J, Lutter R, Marley P, Moschner K, Napiorkowski PJ, Pakarinen J, Petts A, Reiter P, Renstrøm T, Seidlitz M, Siebeck B, Siem S, Sotty C, Srebrny J, Stefanescu I, Tveten GM, Van de Walle J, Vermeulen M, Voulot D, Warr N, Wenander F, Wiens A, De Witte H, Wrzosek-Lipska K. Spectroscopic Quadrupole Moments in {96,98}Sr: Evidence for Shape Coexistence in Neutron-Rich Strontium Isotopes at N=60. Phys Rev Lett 2016; 116:022701. [PMID: 26824536 DOI: 10.1103/physrevlett.116.022701] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Indexed: 06/05/2023]
Abstract
Neutron-rich {96,98}Sr isotopes have been investigated by safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility. Reduced transition probabilities and spectroscopic quadrupole moments have been extracted from the differential Coulomb excitation cross sections. These results allow, for the first time, the drawing of definite conclusions about the shape coexistence of highly deformed prolate and spherical configurations. In particular, a very small mixing between the coexisting states is observed, contrary to other mass regions where strong mixing is present. Experimental results have been compared to beyond-mean-field calculations using the Gogny D1S interaction in a five-dimensional collective Hamiltonian formalism, which reproduce the shape change at N=60.
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Affiliation(s)
- E Clément
- GANIL, CEA/DSM-CNRS/IN2P3, F-14076 Caen Cedex 05, France
- PH Department, CERN 1211, Geneva 23, Switzerland
| | - M Zielińska
- CEA Saclay, IRFU, SPhN, 91191 Gif-sur-Yvette, France
- Heavy Ion Laboratory, University of Warsaw, PL-02-093 Warsaw, Poland
| | - A Görgen
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - W Korten
- CEA Saclay, IRFU, SPhN, 91191 Gif-sur-Yvette, France
| | - S Péru
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - J Libert
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - H Goutte
- CEA Saclay, IRFU, SPhN, 91191 Gif-sur-Yvette, France
| | - S Hilaire
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - B Bastin
- GANIL, CEA/DSM-CNRS/IN2P3, F-14076 Caen Cedex 05, France
| | - C Bauer
- Institut für Kernphysik, Technische Universität Darmstadt, D-50937 Darmstadt, Germany
| | - A Blazhev
- Institute of Nuclear Physics, University of Cologne, D-50397 Cologne, Germany
| | - N Bree
- Instituut voor Kern-en Stralingsfysica, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - B Bruyneel
- Institute of Nuclear Physics, University of Cologne, D-50397 Cologne, Germany
| | - P A Butler
- Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - J Butterworth
- Department of Physics, University of York, YO10 5DD York, United Kingdom
| | - P Delahaye
- GANIL, CEA/DSM-CNRS/IN2P3, F-14076 Caen Cedex 05, France
- PH Department, CERN 1211, Geneva 23, Switzerland
| | - A Dijon
- GANIL, CEA/DSM-CNRS/IN2P3, F-14076 Caen Cedex 05, France
| | - D T Doherty
- CEA Saclay, IRFU, SPhN, 91191 Gif-sur-Yvette, France
| | - A Ekström
- Physics Department, University of Lund, Box 118, SE-221 00 Lund, Sweden
| | - C Fitzpatrick
- Department of Physics, University of Manchester, M13 9PL Manchester, United Kingdom
| | - C Fransen
- Institute of Nuclear Physics, University of Cologne, D-50397 Cologne, Germany
| | - G Georgiev
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - R Gernhäuser
- Fakultät für Physik, Ludwig-Maximilians-Universität München, D-85740 Garching, Germany
| | - H Hess
- Institute of Nuclear Physics, University of Cologne, D-50397 Cologne, Germany
| | - J Iwanicki
- Heavy Ion Laboratory, University of Warsaw, PL-02-093 Warsaw, Poland
| | - D G Jenkins
- Department of Physics, University of York, YO10 5DD York, United Kingdom
| | - A C Larsen
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - J Ljungvall
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - R Lutter
- Fakultät für Physik, Ludwig-Maximilians-Universität München, D-85740 Garching, Germany
| | - P Marley
- Department of Physics, University of York, YO10 5DD York, United Kingdom
| | - K Moschner
- Institute of Nuclear Physics, University of Cologne, D-50397 Cologne, Germany
| | - P J Napiorkowski
- Heavy Ion Laboratory, University of Warsaw, PL-02-093 Warsaw, Poland
| | - J Pakarinen
- PH Department, CERN 1211, Geneva 23, Switzerland
| | - A Petts
- Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - P Reiter
- Institute of Nuclear Physics, University of Cologne, D-50397 Cologne, Germany
| | - T Renstrøm
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - M Seidlitz
- Institute of Nuclear Physics, University of Cologne, D-50397 Cologne, Germany
| | - B Siebeck
- Institute of Nuclear Physics, University of Cologne, D-50397 Cologne, Germany
| | - S Siem
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - C Sotty
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - J Srebrny
- Heavy Ion Laboratory, University of Warsaw, PL-02-093 Warsaw, Poland
| | - I Stefanescu
- Instituut voor Kern-en Stralingsfysica, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - G M Tveten
- PH Department, CERN 1211, Geneva 23, Switzerland
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | | | - M Vermeulen
- Department of Physics, University of York, YO10 5DD York, United Kingdom
| | - D Voulot
- PH Department, CERN 1211, Geneva 23, Switzerland
| | - N Warr
- Institute of Nuclear Physics, University of Cologne, D-50397 Cologne, Germany
| | - F Wenander
- PH Department, CERN 1211, Geneva 23, Switzerland
| | - A Wiens
- Institute of Nuclear Physics, University of Cologne, D-50397 Cologne, Germany
| | - H De Witte
- Instituut voor Kern-en Stralingsfysica, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - K Wrzosek-Lipska
- Heavy Ion Laboratory, University of Warsaw, PL-02-093 Warsaw, Poland
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13
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Ceruti S, Camera F, Bracco A, Avigo R, Benzoni G, Blasi N, Bocchi G, Bottoni S, Brambilla S, Crespi FCL, Giaz A, Leoni S, Mentana A, Million B, Morales AI, Nicolini R, Pellegri L, Pullia A, Riboldi S, Wieland O, Birkenbach B, Bazzacco D, Ciemala M, Désesquelles P, Eberth J, Farnea E, Görgen A, Gottardo A, Hess H, Judson DS, Jungclaus A, Kmiecik M, Korten W, Maj A, Menegazzo R, Mengoni D, Michelagnoli C, Modamio V, Montanari D, Myalski S, Napoli D, Quintana B, Reiter P, Recchia F, Rosso D, Sahin E, Salsac MD, Söderström PA, Stezowski O, Theisen C, Ur C, Valiente-Dobón JJ, Zieblinski M. Isospin Mixing in ^{80}Zr: From Finite to Zero Temperature. Phys Rev Lett 2015; 115:222502. [PMID: 26650299 DOI: 10.1103/physrevlett.115.222502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Indexed: 06/05/2023]
Abstract
The isospin mixing was deduced in the compound nucleus ^{80}Zr at an excitation energy of E^{*}=54 MeV from the γ decay of the giant dipole resonance. The reaction ^{40}Ca+^{40}Ca at E_{beam}=136 MeV was used to form the compound nucleus in the isospin I=0 channel, while the reaction ^{37}Cl+^{44}Ca at E_{beam}=95 MeV was used as the reference reaction. The γ rays were detected with the AGATA demonstrator array coupled with LaBr_{3}:Ce detectors. The temperature dependence of the isospin mixing was obtained and the zero-temperature value deduced. The isospin-symmetry-breaking correction δ_{C} used for the Fermi superallowed transitions was extracted and found to be consistent with β-decay data.
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Affiliation(s)
- S Ceruti
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - F Camera
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A Bracco
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - R Avigo
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - G Benzoni
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - N Blasi
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - G Bocchi
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Bottoni
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Brambilla
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - F C L Crespi
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A Giaz
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Leoni
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A Mentana
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - B Million
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A I Morales
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - R Nicolini
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - L Pellegri
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A Pullia
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Riboldi
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - O Wieland
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - D Bazzacco
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - M Ciemala
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland
| | - P Désesquelles
- CSNSM, CNRS/IN2P3 and Univ. Paris-Sud, F-91405 Orsay Campus, France
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - E Farnea
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - A Görgen
- IRFU, CEA/DSM, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
- Department of Physics, University of Oslo, P.O. Box 1048 Blindern, N-0316 Oslo, Norway
| | - A Gottardo
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - M Kmiecik
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland
| | - W Korten
- IRFU, CEA/DSM, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - A Maj
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland
| | - R Menegazzo
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - D Mengoni
- INFN, Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - C Michelagnoli
- INFN, Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - V Modamio
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - D Montanari
- INFN, Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - S Myalski
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland
| | - D Napoli
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - B Quintana
- Laboratorio de Radiaciones Ionizantes, Universidad de Salamanca, E-37008 Salamanca, Spain
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - F Recchia
- INFN, Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - D Rosso
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - E Sahin
- Department of Physics, University of Oslo, P.O. Box 1048 Blindern, N-0316 Oslo, Norway
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - M D Salsac
- IRFU, CEA/DSM, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - P-A Söderström
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - O Stezowski
- Université Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France
| | - Ch Theisen
- IRFU, CEA/DSM, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - C Ur
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | | | - M Zieblinski
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland
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14
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Jolie J, Régis JM, Wilmsen D, Ahmed S, Pfeiffer M, Saed-Samii N, Warr N, Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, Simpson G, De France G, Urban W, Drouet F, Vancraeyenest A, Baczyk P, Czerwinski M, Korgul A, Mazzocchi C, Rzaca-Urban T, Bruce A, Roberts O, Fraile L, Mach H, Paziy V, Ignatov A, Ilieva S, Kröll T, Scheck M, Thürauf M, Ivanova D, Kisyov S, Lalkovski S, Podolyák Z, Regan P, Korten W, Zielinska M, Salsac M, Habs D, Thirolf P, Ur CA, Bernards C, Casten R, Cooper N, Werner V, Cakirli R, Leoni S, Benzoni G, Bocchi G, Bottoni S, Crespi F, Fornal B, Cieplicka N, Szpak B, Petrache C, Leguillon R, John R, Lorenz C, Massarczyk R, Schwengner R, Curien D, Lozeva R, Sengele L, Marginean N, Lica R. The (n,γ) campaigns at EXILL. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20159301014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Régis JM, Jolie J, Mach H, Simpson G, Blazhev A, Pascovici G, Pfeiffer M, Rudigier M, Saed-Samii N, Warr N, Blanc A, de France G, Jentschel M, Köster U, Mutti P, Soldner T, Ur C, Urban W, Bruce A, Drouet F, Fraile L, Ilieva S, Korten W, Kröll T, Lalkovski S, Mărginean S, Paziy V, Podolyák Z, Regan P, Stezowski O, Vancraeyenest A. The Generalized Centroid Difference method for lifetime measurements via γ-γcoincidences using large fast-timing arrays. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20159301013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Crespi FCL, Bracco A, Nicolini R, Mengoni D, Pellegri L, Lanza EG, Leoni S, Maj A, Kmiecik M, Avigo R, Benzoni G, Blasi N, Boiano C, Bottoni S, Brambilla S, Camera F, Ceruti S, Giaz A, Million B, Morales AI, Vandone V, Wieland O, Bednarczyk P, Ciemała M, Grebosz J, Krzysiek M, Mazurek K, Zieblinski M, Bazzacco D, Bellato M, Birkenbach B, Bortolato D, Calore E, Cederwall B, Charles L, de Angelis G, Désesquelles P, Eberth J, Farnea E, Gadea A, Görgen A, Gottardo A, Isocrate R, Jolie J, Jungclaus A, Karkour N, Korten W, Menegazzo R, Michelagnoli C, Molini P, Napoli DR, Pullia A, Recchia F, Reiter P, Rosso D, Sahin E, Salsac MD, Siebeck B, Siem S, Simpson J, Söderström PA, Stezowski O, Theisen C, Ur C, Valiente-Dobón JJ. Isospin character of low-lying pygmy dipole states in 208Pb via inelastic scattering of 17O ions. Phys Rev Lett 2014; 113:012501. [PMID: 25032921 DOI: 10.1103/physrevlett.113.012501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Indexed: 06/03/2023]
Abstract
The properties of pygmy dipole states in 208Pb were investigated using the 208Pb(17O, 17O'γ) reaction at 340 MeV and measuring the γ decay with high resolution with the AGATA demonstrator array. Cross sections and angular distributions of the emitted γ rays and of the scattered particles were measured. The results are compared with (γ, γ') and (p, p') data. The data analysis with the distorted wave Born approximation approach gives a good description of the elastic scattering and of the inelastic excitation of the 2+ and 3- states. For the dipole transitions a form factor obtained by folding a microscopically calculated transition density was used for the first time. This has allowed us to extract the isoscalar component of the 1- excited states from 4 to 8 MeV.
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Affiliation(s)
- F C L Crespi
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A Bracco
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - R Nicolini
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - D Mengoni
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - L Pellegri
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - E G Lanza
- INFN, Sezione di Catania, I-95123 Catania, Italy
| | - S Leoni
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A Maj
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - M Kmiecik
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - R Avigo
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - G Benzoni
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - N Blasi
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - C Boiano
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Bottoni
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Brambilla
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - F Camera
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Ceruti
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A Giaz
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - B Million
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A I Morales
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - V Vandone
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - O Wieland
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - P Bednarczyk
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - M Ciemała
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - J Grebosz
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - M Krzysiek
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - K Mazurek
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - M Zieblinski
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - D Bazzacco
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - M Bellato
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - D Bortolato
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - E Calore
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - B Cederwall
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - L Charles
- Institut Pluridisciplinaire Hubert Curien IPHC, CNRS/IN2P3 and Université de Strasbourg BP 28, F-67037 Strasbourg Cedex 2, France
| | - G de Angelis
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - P Désesquelles
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse CSNSM, CNRS/IN2P3 and Université Paris-Sud, F-91405 Orsay Campus, France
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - E Farnea
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - A Gadea
- IFIC, CSIC-Universitat de València, E-46980 Valéncia, Spain
| | - A Görgen
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - A Gottardo
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - R Isocrate
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - J Jolie
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - N Karkour
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse CSNSM, CNRS/IN2P3 and Université Paris-Sud, F-91405 Orsay Campus, France
| | - W Korten
- Institut de Recherche sur les lois Fondamentales de l'Univers IRFU, CEA/DSM, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - R Menegazzo
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - C Michelagnoli
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - P Molini
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - D R Napoli
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - A Pullia
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - F Recchia
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - D Rosso
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - E Sahin
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - M D Salsac
- Institut de Recherche sur les lois Fondamentales de l'Univers IRFU, CEA/DSM, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - B Siebeck
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - S Siem
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - J Simpson
- STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom
| | - P-A Söderström
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - O Stezowski
- Université de Lyon, F-69622, Lyon, France and Université Lyon 1, Villeurbanne; CNRS/IN2P3, UMR5822, IPNL, France
| | - Ch Theisen
- Institut de Recherche sur les lois Fondamentales de l'Univers IRFU, CEA/DSM, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - C Ur
- INFN, Sezione di Padova, I-35131 Padova, Italy
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17
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Pietralla N, Reese M, Cortes M, Ameil F, Bazzacco D, Bentley M, Boutachkov P, Domingo-Pardo C, Gadea A, Gerl J, Goel N, Golubev P, Górska M, Guastalla G, Habermann T, Kojouharov I, Korten W, Merchán E, Pietri S, Ralet D, Reiter P, Rudolph D, Schaffner H, Singh P, Wieland O, Wollersheim H. On the Road to FAIR: 1stOperation of AGATA in PreSPEC at GSI. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146602083] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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18
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Clément E, Görgen A, Dijon A, France GD, Bastin B, Blazhev A, Bree N, Butler P, Delahaye P, Ekstrom A, Georgiev G, Hasan N, Iwanicki J, Jenkins D, Korten W, Larsen AC, Ljungvall J, Moschner K, Napiorkowski P, Pakarinen J, Petts A, Renstrom T, Seidlitz M, Siem S, Sotty C, Srebrny J, Stefanescu I, Tveten GM, Walle JVD, Warr N, Wrzosek-Lipska K, Zielińska M, Bauer C, Bruyneel B, Butterworth J, Fitzpatrick C, Fransen C, Gernhäuser R, Hess H, Lutter R, Marley P, Reiter P, Siebeck B, Vermeulen M, Wiens A, De Witte H. Onset of collectivity in96,98Sr studied via Coulomb excitation. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146602021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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19
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John P, Modamio V, Valiente-Dobón J, Mengoni D, Gottardo A, Bazzacco D, Lunardi S, Alexander T, Angelis GD, Ashwood N, Barr M, Bizzeti P, Bizzeti-Sona A, Bottoni S, Bowry M, Bracco A, Browne F, Bunce M, Gadea A, Camera F, Corradi L, Crespi F, Farnea E, Fioretto E, Kokalova T, Korten W, Kuşoğlu A, Lenzi S, Leoni S, Michelagnoli C, Mijatović T, Montagnoli G, Montanari D, Napoli D, Podolyák Z, Pollarolo G, Recchia F, Roberts O, Şahin E, Salsac MD, Scarlassara F, Stefanini A, Szilner S, Ur C, Walshe J, Wheldon C. Study of shape transition in the neutron-rich Os isotopes. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146602057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Clément E, Görgen A, Dijon A, de France G, Bastin B, Blazhev A, Bree N, Butler P, Delahaye P, Ekstrom A, Georgiev G, Hasan N, Iwanicki J, Jenkins D, Korten W, Larsen A, Ljungvall J, Moschner K, Napiorkowski P, Pakarinen J, Petts A, Renstrom T, Seidlitz M, Siem S, Sotty C, Srebrny J, Stefanescu I, Tveten G, Van de Walle J, Warr N, Wrzosek-Lipska K, Zielińska M, Bauer C, Bruyneel B, Butterworth J, Fitzpatrick C, Fransen C, Gernhäuser R, Hess H, Lutter R, Marley P, Reiter P, Siebeck B, Vermeulen M, Wiens A, De Witte H. Onset of collectivity in neutron-rich Sr and Kr isotopes: Prompt spectroscopy after Coulomb excitation at REX-ISOLDE, CERN. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20136201003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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21
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Grente L, Salsac MD, Korten W, Görgen A, Hagen TW, Braunroth T, Bruyneel B, Celikovic I, Clément E, Delaune O, Dijon A, Drouart A, Ertürk S, Farget F, de France G, Gottardo A, Hackstein M, Jacquot B, Libert J, Litzinger J, Ljungvall J, Louchart C, Michelagnoli C, Napoli D, Navin A, Pillet N, Pipidis A, Recchia F, Rejmund M, Rother W, Sahin E, Schmitt C, Siem S, Sulignano B, Valiente-Dobon J, Zell K. Lifetime measurements on fission fragments in the A ∼ 100 region. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20136201002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Ketelhut S, Greenlees PT, Ackermann D, Antalic S, Clément E, Darby IG, Dorvaux O, Drouart A, Eeckhaudt S, Gall BJP, Görgen A, Grahn T, Gray-Jones C, Hauschild K, Herzberg RD, Hessberger FP, Jakobsson U, Jones GD, Jones P, Julin R, Juutinen S, Khoo TL, Korten W, Leino M, Leppänen AP, Ljungvall J, Moon S, Nyman M, Obertelli A, Pakarinen J, Parr E, Papadakis P, Peura P, Piot J, Pritchard A, Rahkila P, Rostron D, Ruotsalainen P, Sandzelius M, Sarén J, Scholey C, Sorri J, Steer A, Sulignano B, Theisen C, Uusitalo J, Venhart M, Zielinska M, Bender M, Heenen PH. Gamma-ray spectroscopy at the limits: first observation of rotational bands in 255Lr. Phys Rev Lett 2009; 102:212501. [PMID: 19519098 DOI: 10.1103/physrevlett.102.212501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2008] [Indexed: 05/27/2023]
Abstract
The rotational band structure of 255Lr has been investigated using advanced in-beam gamma-ray spectroscopic techniques. To date, 255Lr is the heaviest nucleus to be studied in this manner. One rotational band has been unambiguously observed and strong evidence for a second rotational structure was found. The structures are tentatively assigned to be based on the 1/2-[521] and 7/2-[514] Nilsson states, consistent with assignments from recently obtained alpha decay data. The experimental rotational band dynamic moment of inertia is used to test self-consistent mean-field calculations using the Skyrme SLy4 interaction and a density-dependent pairing force.
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Affiliation(s)
- S Ketelhut
- Department of Physics, University of Jyväskylä, FIN-40014 Jyväskylä, Finland.
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23
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Ljungvall J, Görgen A, Girod M, Delaroche JP, Dewald A, Dossat C, Farnea E, Korten W, Melon B, Menegazzo R, Obertelli A, Orlandi R, Petkov P, Pissulla T, Siem S, Singh RP, Srebrny J, Theisen CH, Ur CA, Valiente-Dobón JJ, Zell KO, Zielińska M. Shape coexistence in light se isotopes: evidence for oblate shapes. Phys Rev Lett 2008; 100:102502. [PMID: 18352179 DOI: 10.1103/physrevlett.100.102502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Indexed: 05/26/2023]
Abstract
Lifetimes of states in the ground-state bands of (70)Se and (72)Se were measured using the recoil-distance Doppler shift method. The results deviate significantly from earlier measurements, requiring a revision of the conclusions drawn from a recent Coulomb excitation experiment concerning the shape of (70)Se. The new results lead to a coherent picture of shape coexistence in the neutron-deficient selenium and krypton isotopes. The coexistence and evolution of oblate and prolate shapes in this mass region is for the first time consistently described by new Hartree-Fock-Bogolyubov-based configuration-mixing calculations which were performed using the Gogny D1S interaction.
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Affiliation(s)
- J Ljungvall
- CEA-Saclay, DAPNIA/SPhN, F-91191 Gif-sur-Yvette Cedex, France
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24
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Chatillon A, Theisen C, Bouchez E, Butler PA, Clément E, Dorvaux O, Eeckhaudt S, Gall BJP, Görgen A, Grahn T, Greenlees PT, Herzberg RD, Hessberger F, Hürstel A, Jones GD, Jones P, Julin R, Juutinen S, Kettunen H, Khalfallah F, Korten W, Le Coz Y, Leino M, Leppänen AP, Nieminen P, Pakarinen J, Perkowski J, Rahkila P, Rousseau M, Scholey C, Uusitalo J, Wilson JN, Bonche P, Heenen PH. Observation of a rotational band in the odd-Z transfermium nucleus 101251Md. Phys Rev Lett 2007; 98:132503. [PMID: 17501196 DOI: 10.1103/physrevlett.98.132503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2006] [Revised: 12/18/2006] [Indexed: 05/15/2023]
Abstract
A rotational band has been unambiguously observed in an odd-proton transfermium nucleus for the first time. An in-beam gamma-ray spectroscopic study of 101/251Md has been performed using the gamma-ray array JUROGAM combined with the gas-filled separator RITU and the focal plane device GREAT. The experimental results, compared to Hartree-Fock-Bogolyubov calculations, lead to the interpretation that the rotational band is built on the [521]1/2(-) Nilsson state.
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Affiliation(s)
- A Chatillon
- Commissariat à l'Energie Atomique/SACLAY, DSM/DAPNIA/SPhN, F-91191 Gif-sur-Yvette Cedex, France.
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25
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Herzberg RD, Greenlees PT, Butler PA, Jones GD, Venhart M, Darby IG, Eeckhaudt S, Eskola K, Grahn T, Gray-Jones C, Hessberger FP, Jones P, Julin R, Juutinen S, Ketelhut S, Korten W, Leino M, Leppänen AP, Moon S, Nyman M, Page RD, Pakarinen J, Pritchard A, Rahkila P, Sarén J, Scholey C, Steer A, Sun Y, Theisen C, Uusitalo J. Nuclear isomers in superheavy elements as stepping stones towards the island of stability. Nature 2006; 442:896-9. [PMID: 16929293 DOI: 10.1038/nature05069] [Citation(s) in RCA: 158] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2006] [Accepted: 07/11/2006] [Indexed: 11/09/2022]
Abstract
A long-standing prediction of nuclear models is the emergence of a region of long-lived, or even stable, superheavy elements beyond the actinides. These nuclei owe their enhanced stability to closed shells in the structure of both protons and neutrons. However, theoretical approaches to date do not yield consistent predictions of the precise limits of the 'island of stability'; experimental studies are therefore crucial. The bulk of experimental effort so far has been focused on the direct creation of superheavy elements in heavy ion fusion reactions, leading to the production of elements up to proton number Z = 118 (refs 4, 5). Recently, it has become possible to make detailed spectroscopic studies of nuclei beyond fermium (Z = 100), with the aim of understanding the underlying single-particle structure of superheavy elements. Here we report such a study of the nobelium isotope 254No, with 102 protons and 152 neutrons--the heaviest nucleus studied in this manner to date. We find three excited structures, two of which are isomeric (metastable). One of these structures is firmly assigned to a two-proton excitation. These states are highly significant as their location is sensitive to single-particle levels above the gap in shell energies predicted at Z = 114, and thus provide a microscopic benchmark for nuclear models of the superheavy elements.
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Affiliation(s)
- R-D Herzberg
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK.
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26
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Wilson AN, Singh AK, Hübel H, Davidson PM, Görgen A, Rossbach D, Korichi A, Astier A, Azaiez F, Bazzacco D, Bourgeois C, Buforn N, Byrne AP, Dracoulis GD, Hannachi F, Hauschild K, Korten W, Kröll T, Lane GJ, Lopez-Martens A, Redon N, Reiter P, Rossi-Alvarez C, Schonwasser G, Stezowski O, Thirolf PG. Excitation energies of superdeformed States in 196Pb: towards a systematic study of the second well in Pb isotopes. Phys Rev Lett 2005; 95:182501. [PMID: 16383897 DOI: 10.1103/physrevlett.95.182501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2005] [Indexed: 05/05/2023]
Abstract
The excitation energy of the lowest-energy superdeformed band in 196Pb is established using the techniques of time-correlated gamma-ray spectroscopy. Together with previous measurements on 192Pb and 194Pb, this result allows superdeformed excitation energies, binding energies, and two-proton and two-neutron separation energies to be studied systematically, providing stringent tests for current nuclear models. The results are examined for evidence of a "superdeformed shell gap."
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Affiliation(s)
- A N Wilson
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia.
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27
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Bouchez E, Matea I, Korten W, Becker F, Blank B, Borcea C, Buta A, Emsallem A, de France G, Genevey J, Hannachi F, Hauschild K, Hürstel A, Le Coz Y, Lewitowicz M, Lucas R, Negoita F, de Oliveira Santos F, Pantelica D, Pinston J, Rahkila P, Rejmund M, Stanoiu M, Theisen C. New shape isomer in the self-conjugate nucleus 72Kr. Phys Rev Lett 2003; 90:082502. [PMID: 12633421 DOI: 10.1103/physrevlett.90.082502] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2002] [Indexed: 05/24/2023]
Abstract
A new isomeric 0(+) state was identified as the first excited state in the self-conjugate (N=Z) nucleus 72Kr. By combining for the first time conversion-electron and gamma-ray spectroscopy with the production of metastable states in high-energy fragmentation, the electric-monopole decay of the new isomer to the ground state was established. The new 0(+) state is understood as the band head of the known prolate rotational structure, which strongly supports the interpretation that 72Kr is one of the rare nuclei having an oblate-deformed ground state. This observation gives in fact the first evidence for a shape isomer in a N=Z nucleus.
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Affiliation(s)
- E Bouchez
- CEA Saclay, DAPNIA/SPhN, F-91191 Gif-sur-Yvette, France
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28
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Butler PA, Humphreys RD, Greenlees PT, Herzberg RD, Jenkins DG, Jones GD, Kankaanpää H, Kettunen H, Rahkila P, Scholey C, Uusitalo J, Amzal N, Bastin JE, Brew PMT, Eskola K, Gerl J, Hammond NJ, Hauschild K, Helariutta K, Hessberger FP, Hürstel A, Jones PM, Julin R, Juutinen S, Keenan A, Khoo TL, Korten W, Kuusiniemi P, Le Coz Y, Leino M, Leppänen AP, Muikku M, Nieminen P, Ødegård SW, Page T, Pakarinen J, Reiter P, Sletten G, Theisen C, Wollersheim HJ. Conversion electron cascades in 254(102)No. Phys Rev Lett 2002; 89:202501. [PMID: 12443472 DOI: 10.1103/physrevlett.89.202501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2002] [Indexed: 05/24/2023]
Abstract
The spectrum of prompt conversion electrons emitted by excited 254No nuclei has been measured, revealing discrete lines arising from transitions within the ground state band. A striking feature is a broad distribution that peaks near 100 keV and comprises high multiplicity electron cascades, probably originating from M1 transitions within rotational bands built on high K states.
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Affiliation(s)
- P A Butler
- Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
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29
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Hauschild K, Rejmund M, Grawe H, Caurier E, Nowacki F, Becker F, Le Coz Y, Korten W, Döring J, Górska M, Schmidt K, Dorvaux O, Helariutta K, Jones P, Julin R, Juutinen S, Kettunen H, Leino M, Muikku M, Nieminen P, Rahkila P, Uusitalo J, Azaiez F, Belleguic M. Isomer spectroscopy in (216)(90)Th(126) and the magicity of (218)(92)U(126). Phys Rev Lett 2001; 87:072501. [PMID: 11497885 DOI: 10.1103/physrevlett.87.072501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2001] [Indexed: 05/23/2023]
Abstract
Excited states in (216)Th were investigated via prompt and delayed gamma decays and the recoil-decay tagging method. The decay schemes of the I(pi) = (8+), t(1/2) = 128(8) micros, the I(pi) = (11-), t(1/2) = 615(55) ns, and the I(pi) = (14+), t(1/2) > or = 130 ns isomers were established. The configuration pi h(9/2)f(7/2) is assigned to the I(pi) = (8+) isomer, which implies that the h(9/2) and f(7/2) states are nearly degenerate. This is ascribed to increased binding of the f(7/2) orbital by its coupling to a low-lying I(pi) = (3-) state at E(x) = 1687 keV. The role of octupole and pairing correlations for a Z = 92 shell closure prediction is discussed on the basis of shell model calculations.
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Affiliation(s)
- K Hauschild
- DAPNIA/SPhN CEA Saclay, F-91191 Gif-sur-Yvette, France
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30
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Reiter P, Khoo TL, Lauritsen T, Lister CJ, Seweryniak D, Sonzogni AA, Ahmad I, Amzal N, Bhattacharyya P, Butler PA, Carpenter MP, Chewter AJ, Cizewski JA, Davids CN, Ding KY, Fotiades N, Greene JP, Greenlees PT, Heinz A, Henning WF, Herzberg R, Janssens RV, Jones GD, Kondev FG, Korten W, Leino M. Entry distribution, fission barrier, and formation mechanism of 254102No. Phys Rev Lett 2000; 84:3542-3545. [PMID: 11019141 DOI: 10.1103/physrevlett.84.3542] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2000] [Indexed: 05/23/2023]
Abstract
The entry distribution in angular momentum and excitation energy for the formation of 254No has been measured after the 208Pb(48Ca,2n) reaction at 215 and 219 MeV. This nucleus is populated up to spin 22Planck's over 2pi and excitation energy greater, similar6 MeV above the yrast line, with the half-maximum points of the energy distributions at approximately 5 MeV for spins between 12Planck's over 2pi and 22Planck's over 2pi. This suggests that the fission barrier is greater, similar5 MeV and that the shell-correction energy persists to high spin.
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Affiliation(s)
- P Reiter
- Argonne National Laboratory, Argonne, Illinois 60439 and Ludwig-Maximilians-Universitat, Am Coulombwall 1, D-85748 Garching, Germany
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31
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Korten W. Shape-Coexistence in 74Kr. The Nucleus 2000. [DOI: 10.1007/978-1-4615-4257-5_34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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32
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Deloncle I, Porquet MG, Bauchet A, Azaiez F, Belléguic M, Gall B, Korten W, Astier A, Perriès S, Amzal N, Butler P, Hawcroft D, Alanko T, Cocks J, Greenlees P, Helariutta K, Julin R, Juutinen S, Kankaanpaa H, Kanto A, Kettanen H, Leino H, Mayet P, Muikku M, Rahkila P, Savelius A, Trzaska W. Competition of Fission With the Population of the Yrast Superdeformed Band in 194Pb. The Nucleus 2000. [DOI: 10.1007/978-1-4615-4257-5_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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33
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Hibbert IM, Wadsworth R, Hauschild K, Hübel H, Korten W, Paul ES, Wilson AN, Wilson JN, Byrne AP, Satula W, Wyss R. Superdeformed structures in 197,198Pb. Phys Rev C Nucl Phys 1996; 54:2253-2258. [PMID: 9971578 DOI: 10.1103/physrevc.54.2253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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34
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Lopez-Martens A, Hannachi F, Dossing T, Schück C, Collatz R, Gueorguieva E, Vieu C, Leoni S, Herskind B, Khoo TL, Lauritsen T, Ahmad I, Blumenthal DJ, Carpenter MP, Gassmann D, Janssens RV, Nisius D, Korichi A, Bourgeois C, Astier A, Ducroux L, Meyer M, Redon N, Sharpey-Schafer JF, Wilson AN, Korten W, Bracco A, Lucas R. Fragmentation of the Decay from the Superdeformed Yrast Band in 192Hg. Phys Rev Lett 1996; 77:1707-1710. [PMID: 10063151 DOI: 10.1103/physrevlett.77.1707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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35
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Tveter TS, Gaardhoje JJ, Maj A, Ramsoy T, Ataç A, Bacelar J, Bracco A, Buda A, Camera F, Herskind B, Korten W, Królas W, Menthe A, Million B, Nifenecker H, Pignanelli M, Pinston JA, Ploeg H, Schussler F, Sletten G. Collective dipole motion in highly excited 272Hs (Z=108) nuclei. Phys Rev Lett 1996; 76:1035-1038. [PMID: 10061617 DOI: 10.1103/physrevlett.76.1035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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36
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Deleplanque MA, Frauendorf S, Clark RM, Diamond RM, Stephens FS, Becker JA, Brinkman MJ, Cederwall B, Fallon P, Farris LP, Henry EA, Hubel H, Hughes JR, Korten W, Lee IY, Macchiavelli AO, Stoyer MA, Willsau P, Draper JE, Duyar C, Rubel E. Low-spin termination of the superdeformed band in 135Nd. Phys Rev C Nucl Phys 1995; 52:R2302-R2305. [PMID: 9970823 DOI: 10.1103/physrevc.52.r2302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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37
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Henry EA, Kuhnert A, Becker JA, Brinkman MJ, Wang TF, Cizewski JA, Korten W, Azaiez F, Deleplanque MA, Diamond RM, Draper JE, Kelly WH, Macchiavelli AO, Stephens FS. Comment on "Lack of evidence for a superdeformed band in 192Pb". Phys Rev C Nucl Phys 1994; 49:2849-2850. [PMID: 9969546 DOI: 10.1103/physrevc.49.2849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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38
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Cederwall B, Deleplanque M, Azaiez F, Diamond RM, Fallon P, Korten W, Lee I, Macchiavelli AO, Oliveira JR, Stephens FS, Kelly WH, Vo DT, Becker JA, Brinkman MJ, Henry EA, Hughes JR, Kuhnert A, Stoyer MA, Wang TF, Draper JE, Duyar C, Rubel E, deBoer J. New oblate band in 196Hg with quenched M1 strength. Phys Rev C Nucl Phys 1993; 47:R2443-R2446. [PMID: 9968786 DOI: 10.1103/physrevc.47.r2443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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39
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Wang TF, Henry EA, Becker JA, Kuhnert A, Stoyer MA, Yates SW, Brinkman MJ, Cizewski JA, Macchiavelli AO, Stephens FS, Deleplanque MA, Diamond RM, Draper JE, Azaiez FA, Kelly WH, Korten W, Rubel E, Akovali YA. First lifetime measurement of dipole collective bands in neutron-deficient lead nuclei. Phys Rev Lett 1992; 69:1737-1740. [PMID: 10046301 DOI: 10.1103/physrevlett.69.1737] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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40
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Becker JA, Henry EA, Kuhnert A, Wang TF, Yates SW, Diamond RM, Stephens FS, Draper JE, Korten W, Deleplanque MA, Macchiavelli AO, Azaiez F, Kelly WH, Cizewski JA, Brinkman MJ. Level spin for superdeformed nuclei near A=194. Phys Rev C Nucl Phys 1992; 46:889-903. [PMID: 9968195 DOI: 10.1103/physrevc.46.889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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41
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Kuhnert A, Stoyer MA, Becker JA, Henry EA, Brinkman MJ, Yates SW, Wang TF, Cizewski JA, Stephens FS, Deleplanque MA, Diamond RM, Macchiavelli AO, Draper JE, Azaiez F, Kelly WH, Korten W. Oblate collectivity in 197Pb. Phys Rev C Nucl Phys 1992; 46:133-143. [PMID: 9968091 DOI: 10.1103/physrevc.46.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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42
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Dracoulis GD, Fabricius B, Stuchbery AE, Macchiavelli AO, Korten W, Azaiez F, Rubel E, Deleplanque MA, Diamond RM, Stephens FS. Shape coexistence from the structure of the yrast band in 174Pt. Phys Rev C Nucl Phys 1991; 44:R1246-R1249. [PMID: 9967590 DOI: 10.1103/physrevc.44.r1246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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43
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Wang TF, Kuhnert A, Becker JA, Henry EA, Yates SW, Brinkman MJ, Cizewski JA, Azaiez FA, Deleplanque MA, Diamond RM, Draper JE, Kelly WH, Korten W, Macchiavelli AO, Rubel E, Stephens FS. Superdeformation in 198,196Pb. Phys Rev C Nucl Phys 1991; 43:R2465-R2469. [PMID: 9967365 DOI: 10.1103/physrevc.43.r2465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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44
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Stephens FS, Deleplanque MA, Korten W, Diamond RM, Azaiez F, Macchiavelli AO, Becker JA, Henry EA, Kuhnert A, Draper JE, Cizewski JA, Brinkman MJ. Stephens et al. reply. Phys Rev Lett 1991; 66:1378. [PMID: 10043193 DOI: 10.1103/physrevlett.66.1378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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45
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Azaiez F, Kelly WH, Korten W, Stephens FS, Deleplanque MA, Diamond RM, Macchiavelli AO, Draper JE, Rubel EC, Beausang CW, Burde J, Becker JA, Henry EA, Yates SW, Brinkman MJ, Kuhnert A, Wang TF. Six "identical" superdeformed bands in 194Tl. Phys Rev Lett 1991; 66:1030-1033. [PMID: 10043978 DOI: 10.1103/physrevlett.66.1030] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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46
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Draper JE, Stephens FS, Deleplanque MA, Korten W, Diamond RM, Kelly WH, Azaiez F, Macchiavelli AO, Beausang CW, Rubel EC, Becker JA, Roy N, Henry EA, Brinkman MJ, Kuhnert A, Yates SW. Spins in superdeformed bands in the mass 190 region. Phys Rev C Nucl Phys 1990; 42:R1791-R1795. [PMID: 9966981 DOI: 10.1103/physrevc.42.r1791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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47
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Stephens FS, Deleplanque MA, Draper JE, Diamond RM, Macchiavelli AO, Beausang CW, Korten W, Kelly WH, Azaiez F, Becker JA, Henry EA, Yates SW, Brinkman MJ, Kuhnert A, Cizewski JA. Pseudospin symmetry and quantized alignment in nuclei. Phys Rev Lett 1990; 65:301-304. [PMID: 10042884 DOI: 10.1103/physrevlett.65.301] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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48
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Stephens FS, Deleplanque MA, Draper JE, Diamond RM, Beausang CW, Korten W, Kelly WH, Azaiez F, Becker JA, Henry EA, Roy N, Brinkman MJ, Cizewski JA, Yates SW, Kuhnert A. Spin alignment in superdeformed Hg nuclei. Phys Rev Lett 1990; 64:2623-2626. [PMID: 10041767 DOI: 10.1103/physrevlett.64.2623] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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49
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Gerl J, Ender C, Habs D, Korten W, Schulz E, Schwalm D. Observation of the ground-state band of 234Th using the 232Th(18O,16O) reaction. Phys Rev C Nucl Phys 1989; 39:1145-1146. [PMID: 9955307 DOI: 10.1103/physrevc.39.1145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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