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Xu ZY, Madurga M, Grzywacz R, King TT, Algora A, Andreyev AN, Benito J, Berry T, Borge MJG, Costache C, De Witte H, Fijalkowska A, Fraile LM, Fynbo HOU, Gottardo A, Halverson C, Harkness-Brennan LJ, Heideman J, Huyse M, Illana A, Janiak Ł, Judson DS, Korgul A, Kurtukian-Nieto T, Lazarus I, Lică R, Lozeva R, Marginean N, Marginean R, Mazzocchi C, Mihai C, Mihai RE, Morales AI, Page RD, Pakarinen J, Piersa-Siłkowska M, Podolyák Z, Sarriguren P, Singh M, Sotty C, Stepaniuk M, Tengblad O, Turturica A, Van Duppen P, Vedia V, Viñals S, Warr N, Yokoyama R, Yuan CX. ^{133}In: A Rosetta Stone for Decays of r-Process Nuclei. Phys Rev Lett 2023; 131:022501. [PMID: 37505957 DOI: 10.1103/physrevlett.131.022501] [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: 12/02/2022] [Revised: 04/25/2023] [Accepted: 06/14/2023] [Indexed: 07/30/2023]
Abstract
The β decays from both the ground state and a long-lived isomer of ^{133}In were studied at the ISOLDE Decay Station (IDS). With a hybrid detection system sensitive to β, γ, and neutron spectroscopy, the comparative partial half-lives (logft) have been measured for all their dominant β-decay channels for the first time, including a low-energy Gamow-Teller transition and several first-forbidden (FF) transitions. Uniquely for such a heavy neutron-rich nucleus, their β decays selectively populate only a few isolated neutron unbound states in ^{133}Sn. Precise energy and branching-ratio measurements of those resonances allow us to benchmark β-decay theories at an unprecedented level in this region of the nuclear chart. The results show good agreement with the newly developed large-scale shell model (LSSM) calculations. The experimental findings establish an archetype for the β decay of neutron-rich nuclei southeast of ^{132}Sn and will serve as a guide for future theoretical development aiming to describe accurately the key β decays in the rapid-neutron capture (r-) process.
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Affiliation(s)
- Z Y Xu
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - M Madurga
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - R Grzywacz
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - T T King
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - A Algora
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
- Institute of Nuclear Research (ATOMKI), P. O. Box 51, H-4001 Debrecen, Hungary
| | - A N Andreyev
- School of Physics, Engineering and Technology, University of York, North Yorkshire YO10 5DD, United Kingdom
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - J Benito
- Grupo de Física Nuclear and IPARCOS, Facultad de CC. Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
- Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131, Padova, Italy
- Dipartimento di Fisica e Astronomia, Università di Padova, I-35131 Padova, Italy
| | - T Berry
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - M J G Borge
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 113 bis, E-28006 Madrid, Spain
| | - C Costache
- Horia Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - H De Witte
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - A Fijalkowska
- Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903, USA
- Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland
| | - L M Fraile
- Grupo de Física Nuclear and IPARCOS, Facultad de CC. Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - H O U Fynbo
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - A Gottardo
- IPN, IN2P3-CNRS, Université Paris-Sud, Université Paris Saclay, 91406 Orsay Cedex, France
| | - C Halverson
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - L J Harkness-Brennan
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - J Heideman
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - M Huyse
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - A Illana
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Ł Janiak
- Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland
- National Centre for Nuclear Research, 05-400 Otwock, świerk, Poland
| | - D S Judson
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - A Korgul
- Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland
| | - T Kurtukian-Nieto
- CENBG, Université de Bordeaux-UMR 5797 CNRS/IN2P3, Chemin du Solarium, 33175 Gradignan, France
| | - I Lazarus
- STFC Daresbury, Daresbury, Warrington WA4 4AD, United Kingdom
| | - R Lică
- Horia Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
- ISOLDE, EP Department, CERN, CH-1211 Geneva, Switzerland
| | - R Lozeva
- Université Paris-Saclay, IJCLab, CNRS/IN2P3, F-91405 Orsay, France
| | - N Marginean
- Horia Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - R Marginean
- Horia Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - C Mazzocchi
- Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland
| | - C Mihai
- Horia Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - R E Mihai
- Horia Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - A I Morales
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - R D Page
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - J Pakarinen
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014 Jyväskylä, Finland
- Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki, Finland
| | - M Piersa-Siłkowska
- Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland
- ISOLDE, EP Department, CERN, CH-1211 Geneva, Switzerland
| | - Zs Podolyák
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - P Sarriguren
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 113 bis, E-28006 Madrid, Spain
| | - M Singh
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Ch Sotty
- Horia Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - M Stepaniuk
- Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland
| | - O Tengblad
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 113 bis, E-28006 Madrid, Spain
| | - A Turturica
- Horia Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - P Van Duppen
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
| | - V Vedia
- Grupo de Física Nuclear and IPARCOS, Facultad de CC. Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - S Viñals
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 113 bis, E-28006 Madrid, Spain
| | - N Warr
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
| | - R Yokoyama
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082, Guangdong, China
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Carroll RJ, Podolyák Z, Berry T, Grawe H, Alexander T, Andreyev AN, Ansari S, Borge MJG, Brunet M, Creswell JR, Fraile LM, Fahlander C, Fynbo HOU, Gamba ER, Gelletly W, Gerst RB, Górska M, Gredley A, Greenlees PT, Harkness-Brennan LJ, Huyse M, Judge SM, Judson DS, Konki J, Kurcewicz J, Kuti I, Lalkovski S, Lazarus IH, Lică R, Lund M, Madurga M, Marginean N, Marginean R, Marroquin I, Mihai C, Mihai RE, Nácher E, Negret A, Nita C, Pascu S, Page RD, Patel Z, Perea A, Phrompao J, Piersa M, Pucknell V, Rahkila P, Rapisarda E, Regan PH, Rotaru F, Rudigier M, Shand CM, Shearman R, Stegemann S, Stora T, Sotty C, Tengblad O, Van Duppen P, Vedia V, Wadsworth R, Walker PM, Warr N, Wearing F, De Witte H. Competition between Allowed and First-Forbidden β Decay: The Case of ^{208}Hg→^{208}Tl. Phys Rev Lett 2020; 125:192501. [PMID: 33216605 DOI: 10.1103/physrevlett.125.192501] [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: 07/07/2020] [Revised: 09/21/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
The β decay of ^{208}Hg into the one-proton hole, one neutron-particle _{81}^{208}Tl_{127} nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N>126, Z<82 quadrant of neutron-rich nuclei. While both negative and positive parity states with spin 0 and 1 are expected within the Q_{β} window, only three negative parity states are populated directly in the β decay. The data provide a unique test of the competition between allowed Gamow-Teller and Fermi, and first-forbidden β decays, essential for the understanding of the nucleosynthesis of heavy nuclei in the rapid neutron capture process. Furthermore, the observation of the parity changing 0^{+}→0^{-}β decay where the daughter state is core excited is unique, and can provide information on mesonic corrections of effective operators.
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Affiliation(s)
- R J Carroll
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Zs Podolyák
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
- ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Planckstrasse 1, 64291 Darmstadt, Germany
| | - T Berry
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - H Grawe
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany
| | - T Alexander
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - A N Andreyev
- University of York, Dept Phys, North Yorkshire YO10 5DD, United Kingdom
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai-mura, Ibaraki 319-1195, Japan
| | - S Ansari
- Institut für Kernphysik der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
| | - M J G Borge
- CERN, Physics Department, 1211 Geneva 23, Switzerland
| | - M Brunet
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - J R Creswell
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - L M Fraile
- Grupo de Física Nuclear & IPARCOS, Universidad Complutense de Madrid, CEI Moncloa, E-28040 Madrid, Spain
| | - C Fahlander
- Department of Physics, Lund University, S-22100 Lund, Sweden
| | - H O U Fynbo
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus, Denmark
| | - E R Gamba
- University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - W Gelletly
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - R-B Gerst
- Institut für Kernphysik der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
| | - M Górska
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany
| | - A Gredley
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - P T Greenlees
- University of Jyvaskyla, Department of Physics, University of Jyvaskyla, P.O. Box 35, FI-40014 Jyvaskyla, Finland
- Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - L J Harkness-Brennan
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - M Huyse
- KU Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, 3001 Leuven, Belgium
| | - S M Judge
- National Physical Laboratory, Teddington, Middlesex TW11 0LW, United Kingdom
| | - D S Judson
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - J Konki
- University of Jyvaskyla, Department of Physics, University of Jyvaskyla, P.O. Box 35, FI-40014 Jyvaskyla, Finland
- Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - J Kurcewicz
- CERN, Physics Department, 1211 Geneva 23, Switzerland
| | - I Kuti
- Institute of Nuclear Research of the Hungarian Academy of Sciences, 4026 Debrecen, Hungary
| | - S Lalkovski
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - I H Lazarus
- STFC, Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
| | - R Lică
- CERN, Physics Department, 1211 Geneva 23, Switzerland
- Horea Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - M Lund
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus, Denmark
| | - M Madurga
- CERN, Physics Department, 1211 Geneva 23, Switzerland
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - N Marginean
- Horea Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - R Marginean
- Horea Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - I Marroquin
- Instituto de Estructura de la Materia, CSIC, Serrano 113 bis, E-28006 Madrid, Spain
| | - C Mihai
- Horea Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - R E Mihai
- Horea Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - E Nácher
- Instituto de Estructura de la Materia, CSIC, Serrano 113 bis, E-28006 Madrid, Spain
| | - A Negret
- Horea Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - C Nita
- University of Brighton, Brighton BN2 4GJ, United Kingdom
- Horea Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - S Pascu
- Horea Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - R D Page
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - Z Patel
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - A Perea
- Instituto de Estructura de la Materia, CSIC, Serrano 113 bis, E-28006 Madrid, Spain
| | - J Phrompao
- Department of Physics and Materials Science, Chiang Mai University, 50200 Chiang Mai, Thailand
| | - M Piersa
- Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland
| | - V Pucknell
- STFC, Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
| | - P Rahkila
- University of Jyvaskyla, Department of Physics, University of Jyvaskyla, P.O. Box 35, FI-40014 Jyvaskyla, Finland
- Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - E Rapisarda
- CERN, Physics Department, 1211 Geneva 23, Switzerland
| | - P H Regan
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
- National Physical Laboratory, Teddington, Middlesex TW11 0LW, United Kingdom
| | - F Rotaru
- Horea Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - M Rudigier
- 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
| | - R Shearman
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
- National Physical Laboratory, Teddington, Middlesex TW11 0LW, United Kingdom
| | - S Stegemann
- Institut für Kernphysik der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
| | - T Stora
- CERN, Physics Department, 1211 Geneva 23, Switzerland
| | - Ch Sotty
- KU Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, 3001 Leuven, Belgium
- Horea Hulubei National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest, Romania
| | - O Tengblad
- Instituto de Estructura de la Materia, CSIC, Serrano 113 bis, E-28006 Madrid, Spain
| | - P Van Duppen
- KU Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, 3001 Leuven, Belgium
| | - V Vedia
- Grupo de Física Nuclear & IPARCOS, Universidad Complutense de Madrid, CEI Moncloa, E-28040 Madrid, Spain
| | - R Wadsworth
- University of York, Dept Phys, North Yorkshire YO10 5DD, United Kingdom
| | - P M Walker
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - N Warr
- Institut für Kernphysik der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
| | - F Wearing
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - H De Witte
- KU Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, 3001 Leuven, Belgium
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3
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Mărginean N, Little D, Tsunoda Y, Leoni S, Janssens RVF, Fornal B, Otsuka T, Michelagnoli C, Stan L, Crespi FCL, Costache C, Lica R, Sferrazza M, Turturica A, Ayangeakaa AD, Auranen K, Barani M, Bender PC, Bottoni S, Boromiza M, Bracco A, Călinescu S, Campbell CM, Carpenter MP, Chowdhury P, Ciemała M, Cieplicka-Oryǹczak N, Cline D, Clisu C, Crawford HL, Dinescu IE, Dudouet J, Filipescu D, Florea N, Forney AM, Fracassetti S, Gade A, Gheorghe I, Hayes AB, Harca I, Henderson J, Ionescu A, Iskra ŁW, Jentschel M, Kandzia F, Kim YH, Kondev FG, Korschinek G, Köster U, Krzysiek M, Lauritsen T, Li J, Mărginean R, Maugeri EA, Mihai C, Mihai RE, Mitu A, Mutti P, Negret A, Niţă CR, Olăcel A, Oprea A, Pascu S, Petrone C, Porzio C, Rhodes D, Seweryniak D, Schumann D, Sotty C, Stolze SM, Şuvăilă R, Toma S, Ujeniuc S, Walters WB, Wu CY, Wu J, Zhu S, Ziliani S. Shape Coexistence at Zero Spin in ^{64}Ni Driven by the Monopole Tensor Interaction. Phys Rev Lett 2020; 125:102502. [PMID: 32955302 DOI: 10.1103/physrevlett.125.102502] [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: 06/24/2020] [Accepted: 07/31/2020] [Indexed: 06/11/2023]
Abstract
The low-spin structure of the semimagic ^{64}Ni nucleus has been considerably expanded: combining four experiments, several 0^{+} and 2^{+} excited states were identified below 4.5 MeV, and their properties established. The Monte Carlo shell model accounts for the results and unveils an unexpectedly complex landscape of coexisting shapes: a prolate 0^{+} excitation is located at a surprisingly high energy (3463 keV), with a collective 2^{+} state 286 keV above it, the first such observation in Ni isotopes. The evolution in excitation energy of the prolate minimum across the neutron N=40 subshell gap highlights the impact of the monopole interaction and its variation in strength with N.
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Affiliation(s)
- N Mărginean
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - D Little
- Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3255, USA
- Triangle Universities Nuclear Laboratory, Duke University, Durham, North Carolina 27708-2308, USA
| | - Y Tsunoda
- Center for Nuclear Study, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - S Leoni
- Dipartimento di Fisica, Universitá degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133 Milano, Italy
| | - R V F Janssens
- Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3255, USA
- Triangle Universities Nuclear Laboratory, Duke University, Durham, North Carolina 27708-2308, USA
| | - B Fornal
- Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland
| | - T Otsuka
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3000 Leuven, Belgium
| | - C Michelagnoli
- Institut Laue-Langevin (ILL), 71 Avenue des Martyrs, 38042 Grenoble, France
| | - L Stan
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - F C L Crespi
- Dipartimento di Fisica, Universitá degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133 Milano, Italy
| | - C Costache
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - R Lica
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - M Sferrazza
- Département de Physique, Université libre de Bruxelles, B-1050 Bruxelles, Belgium
| | - A Turturica
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A D Ayangeakaa
- Department of Physics, United States Naval Academy, Annapolis, Maryland 21402, USA
| | - K Auranen
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - M Barani
- Dipartimento di Fisica, Universitá degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133 Milano, Italy
- Institut Laue-Langevin (ILL), 71 Avenue des Martyrs, 38042 Grenoble, France
| | - P C Bender
- Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA
| | - S Bottoni
- Dipartimento di Fisica, Universitá degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133 Milano, Italy
| | - M Boromiza
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A Bracco
- Dipartimento di Fisica, Universitá degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133 Milano, Italy
| | - S Călinescu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - C M Campbell
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - M P Carpenter
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - P Chowdhury
- Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA
| | - M Ciemała
- Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland
| | | | - D Cline
- Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA
| | - C Clisu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - H L Crawford
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - I E Dinescu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - J Dudouet
- Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - D Filipescu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - N Florea
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A M Forney
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
| | - S Fracassetti
- Dipartimento di Fisica, Universitá degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133 Milano, Italy
| | - A Gade
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - I Gheorghe
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A B Hayes
- National Nuclear Data Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - I Harca
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - J Henderson
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - A Ionescu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - Ł W Iskra
- INFN sezione di Milano via Celoria 16, 20133 Milano, Italy
| | - M Jentschel
- Institut Laue-Langevin (ILL), 71 Avenue des Martyrs, 38042 Grenoble, France
| | - F Kandzia
- Institut Laue-Langevin (ILL), 71 Avenue des Martyrs, 38042 Grenoble, France
| | - Y H Kim
- Institut Laue-Langevin (ILL), 71 Avenue des Martyrs, 38042 Grenoble, France
| | - F G Kondev
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - G Korschinek
- Technische Universität München, 80333 München, Germany
| | - U Köster
- Institut Laue-Langevin (ILL), 71 Avenue des Martyrs, 38042 Grenoble, France
| | - M Krzysiek
- Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland
| | - T Lauritsen
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - J Li
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - R Mărginean
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - E A Maugeri
- Paul Scherrer Institut, 5232 Villigen, Switzerland
| | - C Mihai
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - R E Mihai
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A Mitu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - P Mutti
- Institut Laue-Langevin (ILL), 71 Avenue des Martyrs, 38042 Grenoble, France
| | - A Negret
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - C R Niţă
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A Olăcel
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A Oprea
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - S Pascu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - C Petrone
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - C Porzio
- Dipartimento di Fisica, Universitá degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133 Milano, Italy
| | - D Rhodes
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - D Seweryniak
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Schumann
- Paul Scherrer Institut, 5232 Villigen, Switzerland
| | - C Sotty
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - S M Stolze
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - R Şuvăilă
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - S Toma
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - S Ujeniuc
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - W B Walters
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
| | - C Y Wu
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - J Wu
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - S Zhu
- National Nuclear Data Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - S Ziliani
- Dipartimento di Fisica, Universitá degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133 Milano, Italy
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Werner V, Witt W, Beck T, Pietralla N, Boromiza M, Clisu C, Costache C, Dinescu I, Ionescu A, John P, Koseoglou P, Margineăn N, Margineăn R, Mihai C, Mihai R, Mitu A, Negret A, Nita C, Olacel A, Pascu S, Serban A, Sotty C, Stan L, Suvaila R, Toma S, Turturica A, Ujeniuc S, Wiederhold J. Shape transitions between and within Zr isotopes. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201922301070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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
The Zirconium isotopes across the N=56,58 neutron subshell closures have been of special interest since years, sparked by the near doubly-magic features of 96Zr and the subsequent rapid onset of collectivity with a deformed ground-state structure already in 100Zr. Recent state-of-the-art shell model approaches did not only correctly describe this shape-phase transition in the Zr isotopic chain, but alsothe coexistence of non-collective structures and pronounced collectivity especially
in 96,98Zr. Theisotope 98Zr is located on the transition from spherical to deformed ground state structures. We summarize recent experimental work to obtain the B(E2) excitation strengths of the first 2+ state of98Zr, including a new experiment employing the recoil-distance Doppler-shift method following a two-neutron transfer reaction.
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5
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Kirsebom OS, Tengblad O, Lica R, Munch M, Riisager K, Fynbo HOU, Borge MJG, Madurga M, Marroquin I, Andreyev AN, Berry TA, Christensen ER, Fernández PD, Doherty DT, Van Duppen P, Fraile LM, Gallardo MC, Greenlees PT, Harkness-Brennan LJ, Hubbard N, Huyse M, Jensen JH, Johansson H, Jonson B, Judson DS, Konki J, Lazarus I, Lund MV, Marginean N, Marginean R, Perea A, Mihai C, Negret A, Page RD, Pucknell V, Rahkila P, Sorlin O, Sotty C, Swartz JA, Sørensen HB, Törnqvist H, Vedia V, Warr N, De Witte H. First Accurate Normalization of the β-delayed α Decay of ^{16}N and Implications for the ^{12}C(α,γ)^{16}O Astrophysical Reaction Rate. Phys Rev Lett 2018; 121:142701. [PMID: 30339438 DOI: 10.1103/physrevlett.121.142701] [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: 04/09/2018] [Revised: 06/22/2018] [Indexed: 06/08/2023]
Abstract
The ^{12}C(α,γ)^{16}O reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly constrained by laboratory data. The reduced α width, γ_{11}, of the bound 1^{-} level in ^{16}O is particularly important to determine the cross section. The magnitude of γ_{11} is determined via sub-Coulomb α-transfer reactions or the β-delayed α decay of ^{16}N, but the latter approach is presently hampered by the lack of sufficiently precise data on the β-decay branching ratios. Here we report improved branching ratios for the bound 1^{-} level [b_{β,11}=(5.02±0.10)×10^{-2}] and for β-delayed α emission [b_{βα}=(1.59±0.06)×10^{-5}]. Our value for b_{βα} is 33% larger than previously held, leading to a substantial increase in γ_{11}. Our revised value for γ_{11} is in good agreement with the value obtained in α-transfer studies and the weighted average of the two gives a robust and precise determination of γ_{11}, which provides significantly improved constraints on the ^{12}C(α,γ) cross section in the energy range relevant to hydrostatic He burning.
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Affiliation(s)
- O S Kirsebom
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - O Tengblad
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - R Lica
- CERN, CH-1211 Geneva 23, Switzerland
- Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), RO-077125 Bucharest-Magurele, Romania
| | - M Munch
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - K Riisager
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - H O U Fynbo
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - M J G Borge
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- CERN, CH-1211 Geneva 23, Switzerland
| | - M Madurga
- CERN, CH-1211 Geneva 23, Switzerland
| | - I Marroquin
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - A N Andreyev
- Department of Physics, University of York, York YO10 5DD, United Kingdom
- Advanced Science Research Centre (ASRC), Japan Atomic Energy Agency (JAEA), Tokai-mura, Ibaraki 319-1195, Japan
| | - T A Berry
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
| | - E R Christensen
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - P Díaz Fernández
- Department of Physics, Chalmers University of Technology, S-41296 Göteborg, Sweden
| | - D T Doherty
- Department of Physics, University of York, York YO10 5DD, United Kingdom
| | - P Van Duppen
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
| | - L M Fraile
- Grupo de Física Nuclear, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - M C Gallardo
- Grupo de Física Nuclear, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - P T Greenlees
- University of Jyvaskyla, Department of Physics, P.O. Box 35, FI-40014 University of Jyvaskyla, Finland
- Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - L J Harkness-Brennan
- Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - N Hubbard
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
- Department of Physics, University of York, York YO10 5DD, United Kingdom
| | - M Huyse
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
| | - J H Jensen
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - H Johansson
- Department of Physics, Chalmers University of Technology, S-41296 Göteborg, Sweden
| | - B Jonson
- Department of Physics, Chalmers University of Technology, S-41296 Göteborg, Sweden
| | - D S Judson
- Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - J Konki
- CERN, CH-1211 Geneva 23, Switzerland
- University of Jyvaskyla, Department of Physics, P.O. Box 35, FI-40014 University of Jyvaskyla, Finland
- Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - I Lazarus
- STFC Daresbury, Daresbury, Warrington WA4 4AD, United Kingdom
| | - M V Lund
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - N Marginean
- Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), RO-077125 Bucharest-Magurele, Romania
| | - R Marginean
- Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), RO-077125 Bucharest-Magurele, Romania
| | - A Perea
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - C Mihai
- Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), RO-077125 Bucharest-Magurele, Romania
| | - A Negret
- Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), RO-077125 Bucharest-Magurele, Romania
| | - R D Page
- Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - V Pucknell
- STFC Daresbury, Daresbury, Warrington WA4 4AD, United Kingdom
| | - P Rahkila
- University of Jyvaskyla, Department of Physics, P.O. Box 35, FI-40014 University of Jyvaskyla, Finland
- Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - O Sorlin
- CERN, CH-1211 Geneva 23, Switzerland
- GANIL, CEA/DSM-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - C Sotty
- Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), RO-077125 Bucharest-Magurele, Romania
| | - J A Swartz
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - H B Sørensen
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - H Törnqvist
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - V Vedia
- Grupo de Física Nuclear, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - N Warr
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - H De Witte
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
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6
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Leoni S, Fornal B, Mărginean N, Sferrazza M, Tsunoda Y, Otsuka T, Bocchi G, Crespi FCL, Bracco A, Aydin S, Boromiza M, Bucurescu D, Cieplicka-Oryǹczak N, Costache C, Călinescu S, Florea N, Ghiţă DG, Glodariu T, Ionescu A, Iskra ŁW, Krzysiek M, Mărginean R, Mihai C, Mihai RE, Mitu A, Negreţ A, Niţă CR, Olăcel A, Oprea A, Pascu S, Petkov P, Petrone C, Porzio G, Şerban A, Sotty C, Stan L, Ştiru I, Stroe L, Şuvăilă R, Toma S, Turturică A, Ujeniuc S, Ur CA. Multifaceted Quadruplet of Low-Lying Spin-Zero States in ^{66}Ni: Emergence of Shape Isomerism in Light Nuclei. Phys Rev Lett 2017; 118:162502. [PMID: 28474931 DOI: 10.1103/physrevlett.118.162502] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Indexed: 06/07/2023]
Abstract
A search for shape isomers in the ^{66}Ni nucleus was performed, following old suggestions of various mean-field models and recent ones, based on state-of-the-art Monte Carlo shell model (MCSM), all considering ^{66}Ni as the lightest nuclear system with shape isomerism. By employing the two-neutron transfer reaction induced by an ^{18}O beam on a ^{64}Ni target, at the sub-Coulomb barrier energy of 39 MeV, all three lowest-excited 0^{+} states in ^{66}Ni were populated and their γ decay was observed by γ-coincidence technique. The 0^{+} states lifetimes were assessed with the plunger method, yielding for the 0_{2}^{+}, 0_{3}^{+}, and 0_{4}^{+} decay to the 2_{1}^{+} state the B(E2) values of 4.3, 0.1, and 0.2 Weisskopf units (W.u.), respectively. MCSM calculations correctly predict the existence of all three excited 0^{+} states, pointing to the oblate, spherical, and prolate nature of the consecutive excitations. In addition, they account for the hindrance of the E2 decay from the prolate 0_{4}^{+} to the spherical 2_{1}^{+} state, although overestimating its value. This result makes ^{66}Ni a unique nuclear system, apart from ^{236,238}U, in which a retarded γ transition from a 0^{+} deformed state to a spherical configuration is observed, resembling a shape-isomerlike behavior.
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Affiliation(s)
- S Leoni
- Dipartimento di Fisica, Università degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133, Milano, Italy
| | - B Fornal
- Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland
| | - N Mărginean
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - M Sferrazza
- Département de Physique, Université libre de Bruxelles, B-1050 Bruxelles, Belgium
| | - Y Tsunoda
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T Otsuka
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- Instituut voor Kern- en Stralingsfysica, KU Leuven, B-3001 Leuven, Belgium
| | - G Bocchi
- Dipartimento di Fisica, Università degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133, Milano, Italy
| | - F C L Crespi
- Dipartimento di Fisica, Università degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133, Milano, Italy
| | - A Bracco
- Dipartimento di Fisica, Università degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133, Milano, Italy
| | - S Aydin
- Department of Physics, University of Aksaray, Adana E-90 Karayolu Üzeri, Aksaray, Turkey
| | - M Boromiza
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
- University of Bucharest, Faculty of Physics, Bucharest-Magurele, 077125, Romania
| | - D Bucurescu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - N Cieplicka-Oryǹczak
- INFN sezione di Milano via Celoria 16, 20133, Milano, Italy
- Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland
| | - C Costache
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - S Călinescu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - N Florea
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - D G Ghiţă
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - T Glodariu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A Ionescu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
- University of Bucharest, Faculty of Physics, Bucharest-Magurele, 077125, Romania
| | - Ł W Iskra
- Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland
| | - M Krzysiek
- Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland
| | - R Mărginean
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - C Mihai
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - R E Mihai
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A Mitu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A Negreţ
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - C R Niţă
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A Olăcel
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A Oprea
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - S Pascu
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - P Petkov
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - C Petrone
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - G Porzio
- Dipartimento di Fisica, Università degli Studi di Milano, I-20133 Milano, Italy
- INFN sezione di Milano via Celoria 16, 20133, Milano, Italy
| | - A Şerban
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
- University of Bucharest, Faculty of Physics, Bucharest-Magurele, 077125, Romania
| | - C Sotty
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - L Stan
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - I Ştiru
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - L Stroe
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - R Şuvăilă
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - S Toma
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - A Turturică
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - S Ujeniuc
- Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN HH, Bucharest 077125, Romania
| | - C A Ur
- Extreme Light Infrastructure-Nuclear Physics, IFIN-HH, Bucharest, 077125, Romania
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7
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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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8
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Gottardo A, Verney D, Delafosse C, Ibrahim F, Roussière B, Sotty C, Roccia S, Andreoiu C, Costache C, Delattre MC, Deloncle I, Etilé A, Franchoo S, Gaulard C, Guillot J, Lebois M, MacCormick M, Marginean N, Marginean R, Matea I, Mihai C, Mitu I, Olivier L, Portail C, Qi L, Stan L, Testov D, Wilson J, Yordanov DT. First Evidence of Shape Coexistence in the ^{78}Ni Region: Intruder 0_{2}^{+} State in ^{80}Ge. Phys Rev Lett 2016; 116:182501. [PMID: 27203316 DOI: 10.1103/physrevlett.116.182501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Indexed: 06/05/2023]
Abstract
The N=48 ^{80}Ge nucleus is studied by means of β-delayed electron-conversion spectroscopy at ALTO. The radioactive ^{80}Ga beam is produced through the isotope separation on line photofission technique and collected on a movable tape for the measurement of γ and e^{-} emission following β decay. An electric monopole E0 transition, which points to a 639(1) keV intruder 0_{2}^{+} state, is observed for the first time. This new state is lower than the 2_{1}^{+} level in ^{80}Ge, and provides evidence of shape coexistence close to one of the most neutron-rich doubly magic nuclei discovered so far, ^{78}Ni. This result is compared with theoretical estimates, helping to explain the role of monopole and quadrupole forces in the weakening of the N=50 gap at Z=32. The evolution of intruder 0_{2}^{+} states towards ^{78}Ni is discussed.
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Affiliation(s)
- A Gottardo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - D Verney
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - C Delafosse
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - F Ibrahim
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - B Roussière
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - C Sotty
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest-Măgurele, Romania
| | - S Roccia
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - C Andreoiu
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A S16, Canada
| | - C Costache
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest-Măgurele, Romania
| | - M-C Delattre
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - I Deloncle
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - A Etilé
- University of Helsinki, Helsinki, Finland
| | - S Franchoo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - C Gaulard
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - J Guillot
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - M Lebois
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - M MacCormick
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - N Marginean
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest-Măgurele, Romania
| | - R Marginean
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest-Măgurele, Romania
| | - I Matea
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - C Mihai
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest-Măgurele, Romania
| | - I Mitu
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest-Măgurele, Romania
| | - L Olivier
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - C Portail
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - L Qi
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - L Stan
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest-Măgurele, Romania
| | - D Testov
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
- Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, Russia
| | - J Wilson
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - D T Yordanov
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
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9
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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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10
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Sotty C, Zielińska M, Georgiev G, Balabanski DL, Stuchbery AE, Blazhev A, Bree N, Chevrier R, Das Gupta S, Daugas JM, Davinson T, De Witte H, Diriken J, Gaffney LP, Geibel K, Hadyńska-Klek K, Kondev FG, Konki J, Kröll T, Morel P, Napiorkowski P, Pakarinen J, Reiter P, Scheck M, Seidlitz M, Siebeck B, Simpson G, Törnqvist H, Warr N, Wenander F. Publisher's Note: (37)(97)Rb(60): The Cornerstone of the Region of Deformation around A∼100 [Phys. Rev. Lett. 115, 172501 (2015)]. Phys Rev Lett 2015; 115:209902. [PMID: 26613483 DOI: 10.1103/physrevlett.115.209902] [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] [Received: 11/03/2015] [Indexed: 06/05/2023]
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11
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Sotty C, Zielińska M, Georgiev G, Balabanski DL, Stuchbery AE, Blazhev A, Bree N, Chevrier R, Das Gupta S, Daugas JM, Davinson T, De Witte H, Diriken J, Gaffney LP, Geibel K, Hadyńska-Klȩk K, Kondev FG, Konki J, Kröll T, Morel P, Napiorkowski P, Pakarinen J, Reiter P, Scheck M, Seidlitz M, Siebeck B, Simpson G, Törnqvist H, Warr N, Wenander F. (97)(37)Rb(60): The Cornerstone of the Region of Deformation around A ∼ 100 [corrected]. Phys Rev Lett 2015; 115:172501. [PMID: 26551106 DOI: 10.1103/physrevlett.115.172501] [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: 08/03/2015] [Indexed: 06/05/2023]
Abstract
Excited states of the neutron-rich nuclei (97,99)Rb were populated for the first time using the multistep Coulomb excitation of radioactive beams. Comparisons of the results with particle-rotor model calculations provide clear identification for the ground-state rotational band of (97)Rb as being built on the πg(9/2) [431] 3/2(+) Nilsson-model configuration. The ground-state excitation spectra of the Rb isotopes show a marked distinction between single-particle-like structures below N=60 and rotational bands above. The present study defines the limits of the deformed region around A∼100 and indicates that the deformation of (97)Rb is essentially the same as that observed well inside the deformed region. It further highlights the power of the Coulomb-excitation technique for obtaining spectroscopic information far from stability. The (99)Rb case demonstrates the challenges of studies with very short-lived postaccelerated radioactive beams.
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Affiliation(s)
- C Sotty
- CSNSM, CNRS/IN2P3, Université Paris-Sud, UMR8609, F-91405 ORSAY-Campus, France
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
| | - M Zielińska
- Heavy Ion Laboratory, University of Warsaw, 02-093 Warsaw, Poland
- IRFU/SPhN, CEA Saclay, F-91191 Gif-sur-Yvette, France
| | - G Georgiev
- CSNSM, CNRS/IN2P3, Université Paris-Sud, UMR8609, F-91405 ORSAY-Campus, France
| | - D L Balabanski
- ELI-NP, IFIN-HH, 30 Reactorului Street, 077125 Bucharest, Mǎgurele, Romania
| | - A E Stuchbery
- Department of Nuclear Physics, RSPE, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - A Blazhev
- Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany
| | - N Bree
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
| | - R Chevrier
- CEA, DAM, DIF, F-91297 Arpajon cedex, France
| | - S Das Gupta
- Dipartimento di Fisica, Universitá di Camerino, I-62032 Camerino, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia, Italy
| | - J M Daugas
- CEA, DAM, DIF, F-91297 Arpajon cedex, France
| | - T Davinson
- Department of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
| | - H De Witte
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
| | - J Diriken
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
- Belgian Nuclear Research Centre SCK·CEN, Boeretang 200, B-2400 Mol, Belgium
| | - L P Gaffney
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
- Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - K Geibel
- Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany
| | - K Hadyńska-Klȩk
- Heavy Ion Laboratory, University of Warsaw, 02-093 Warsaw, Poland
| | - F G Kondev
- Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - J Konki
- ISOLDE, CERN, CH-1211 Geneva 23, Switzerland
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
- Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - T Kröll
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - P Morel
- CEA, DAM, DIF, F-91297 Arpajon cedex, France
| | - P Napiorkowski
- Heavy Ion Laboratory, University of Warsaw, 02-093 Warsaw, Poland
| | - J Pakarinen
- ISOLDE, CERN, CH-1211 Geneva 23, Switzerland
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
- Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - P Reiter
- Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany
| | - M Scheck
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - M Seidlitz
- Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany
| | - B Siebeck
- Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany
| | - G Simpson
- LPSC, CNRS/IN2P3, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, INPG, F-38026 Grenoble Cedex, France
| | - H Törnqvist
- ISOLDE, CERN, CH-1211 Geneva 23, Switzerland
| | - N Warr
- Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany
| | - F Wenander
- ISOLDE, CERN, CH-1211 Geneva 23, Switzerland
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12
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Kusoglu A, Stuchbery AE, Georgiev G, Brown BA, Goasduff A, Atanasova L, Balabanski DL, Bostan M, Danchev M, Detistov P, Gladnishki KA, Ljungvall J, Matea I, Radeck D, Sotty C, Stefan I, Verney D, Yordanov DT. Magnetism of an excited self-conjugate nucleus: precise measurement of the g factor of the 2(1)(+) state in (24)Mg. Phys Rev Lett 2015; 114:062501. [PMID: 25723214 DOI: 10.1103/physrevlett.114.062501] [Citation(s) in RCA: 2] [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: 11/04/2014] [Indexed: 06/04/2023]
Abstract
A precise measurement of the g factor of the first-excited state in the self-conjugate (N=Z) nucleus (24)Mg is performed by a new time-differential recoil-in-vacuum method based on the hyperfine field of hydrogenlike ions. Theory predicts that the g factors of such states, in which protons and neutrons occupy the same orbits, should depart from 0.5 by a few percent due to configuration mixing and meson-exchange effects. The experimental result, g=0.538±0.013, is in excellent agreement with recent shell-model calculations and shows a departure from 0.5 by almost 3 standard deviations, thus achieving, for the first time, the precision and accuracy needed to test theory. Proof of the new method opens the way for wide applications including measurements of the magnetism of excited states of exotic nuclei produced as radioactive beams.
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Affiliation(s)
- A Kusoglu
- CSNSM, CNRS/IN2P3; Université Paris-Sud, UMR8609, F-91405 Orsay-Campus, France and Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, 34134 Istanbul, Turkey
| | - A E Stuchbery
- Department of Nuclear Physics, RSPE, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - G Georgiev
- CSNSM, CNRS/IN2P3; Université Paris-Sud, UMR8609, F-91405 Orsay-Campus, France
| | - B A Brown
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - A Goasduff
- CSNSM, CNRS/IN2P3; Université Paris-Sud, UMR8609, F-91405 Orsay-Campus, France
| | - L Atanasova
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
| | - D L Balabanski
- ELI-NP, Horia Hulubei National Institute of Physics and Nuclear Engineering, 077125 Magurele, Romania
| | - M Bostan
- Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, 34134 Istanbul, Turkey
| | - M Danchev
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria
| | - P Detistov
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
| | - K A Gladnishki
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria
| | - J Ljungvall
- CSNSM, CNRS/IN2P3; Université Paris-Sud, UMR8609, F-91405 Orsay-Campus, France
| | - I Matea
- IPN, Orsay, CNRS/IN2P3, Université Paris-Sud, F-91406 Orsay Cedex, France
| | - D Radeck
- Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Köln, Germany
| | - C Sotty
- CSNSM, CNRS/IN2P3; Université Paris-Sud, UMR8609, F-91405 Orsay-Campus, France
| | - I Stefan
- IPN, Orsay, CNRS/IN2P3, Université Paris-Sud, F-91406 Orsay Cedex, France
| | - D Verney
- IPN, Orsay, CNRS/IN2P3, Université Paris-Sud, F-91406 Orsay Cedex, France
| | - D T Yordanov
- IPN, Orsay, CNRS/IN2P3, Université Paris-Sud, F-91406 Orsay Cedex, France and Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany and CERN European Organization for Nuclear Research, Physics Department, CH-1211 Geneva 23, Switzerland
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13
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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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14
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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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