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Monteagudo B, Marqués FM, Gibelin J, Orr NA, Corsi A, Kubota Y, Casal J, Gómez-Camacho J, Authelet G, Baba H, Caesar C, Calvet D, Delbart A, Dozono M, Feng J, Flavigny F, Gheller JM, Giganon A, Gillibert A, Hasegawa K, Isobe T, Kanaya Y, Kawakami S, Kim D, Kiyokawa Y, Kobayashi M, Kobayashi N, Kobayashi T, Kondo Y, Korkulu Z, Koyama S, Lapoux V, Maeda Y, Motobayashi T, Miyazaki T, Nakamura T, Nakatsuka N, Nishio Y, Obertelli A, Ohkura A, Ota S, Otsu H, Ozaki T, Panin V, Paschalis S, Pollacco EC, Reichert S, Rousse JY, Saito AT, Sakaguchi S, Sako M, Santamaria C, Sasano M, Sato H, Shikata M, Shimizu Y, Shindo Y, Stuhl L, Sumikama T, Sun YL, Tabata M, Togano Y, Tsubota J, Uesaka T, Yang ZH, Yasuda J, Yoneda K, Zenihiro J. Mass, Spectroscopy, and Two-Neutron Decay of ^{16}Be. Phys Rev Lett 2024; 132:082501. [PMID: 38457706 DOI: 10.1103/physrevlett.132.082501] [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: 09/19/2023] [Revised: 12/18/2023] [Accepted: 01/29/2024] [Indexed: 03/10/2024]
Abstract
The structure and decay of the most neutron-rich beryllium isotope, ^{16}Be, has been investigated following proton knockout from a high-energy ^{17}B beam. Two relatively narrow resonances were observed for the first time, with energies of 0.84(3) and 2.15(5) MeV above the two-neutron decay threshold and widths of 0.32(8) and 0.95(15) MeV, respectively. These were assigned to be the ground (J^{π}=0^{+}) and first excited (2^{+}) state, with E_{x}=1.31(6) MeV. The mass excess of ^{16}Be was thus deduced to be 56.93(13) MeV, some 0.5 MeV more bound than the only previous measurement. Both states were observed to decay by direct two-neutron emission. Calculations incorporating the evolution of the wave function during the decay as a genuine three-body process reproduced the principal characteristics of the neutron-neutron energy spectra for both levels, indicating that the ground state exhibits a strong spatially compact dineutron component, while the 2^{+} level presents a far more diffuse neutron-neutron distribution.
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Affiliation(s)
- B Monteagudo
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
- FRIB, Michigan State University, East Lansing, Michigan 48824, USA
| | - F M Marqués
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
| | - J Gibelin
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
| | - N A Orr
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
| | - A Corsi
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Y Kubota
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - J Casal
- Dipartimento di Fisica e Astronomia "G. Galilei" and INFN-Sezione di Padova, Via Marzolo 8, 35131 Padova, Italy
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla, Spain
| | - J Gómez-Camacho
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla, Spain
| | - G Authelet
- Département des Accélérateurs, de Cryogénie et de Magnétisme, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Caesar
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Calvet
- Département d'électronique des Détecteurs et d'Informatique pour la Physique, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Delbart
- Département d'électronique des Détecteurs et d'Informatique pour la Physique, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - M Dozono
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - J Feng
- School of Physics, Peking University, Beijing 100871, China
| | - F Flavigny
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - J-M Gheller
- Département des Accélérateurs, de Cryogénie et de Magnétisme, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Giganon
- Département d'électronique des Détecteurs et d'Informatique pour la Physique, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Gillibert
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - K Hasegawa
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kanaya
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - S Kawakami
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - D Kim
- Department of Physics, Ewha Womans University, Republic of Korea
| | - Y Kiyokawa
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - M Kobayashi
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - N Kobayashi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Z Korkulu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Koyama
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - V Lapoux
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Y Maeda
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Miyazaki
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Y Nishio
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - A Obertelli
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - A Ohkura
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - S Ota
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - V Panin
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Paschalis
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - E C Pollacco
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - S Reichert
- Department of Physics, Technische Universität Munchen, 85748 Garching bei München, Germany
| | - J-Y Rousse
- Département d'Ingénierie des Systèmes, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Sakaguchi
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - M Sako
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Santamaria
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - M Sasano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Shindo
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - L Stuhl
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Sumikama
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y L Sun
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - M Tabata
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Uesaka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Z H Yang
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Yasuda
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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Rodríguez-Arcos M, Bermúdez-Montana M, Lemus R, Arias JM, Gómez-Camacho J. Configuration localised states from orthogonal polynomials for effective potentials in 3D systems vs. algebraic DVR approaches. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2044082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M. Rodríguez-Arcos
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad de Mèxico, Mexico
| | - M. Bermúdez-Montana
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad de Mèxico, Mexico
| | - R. Lemus
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad de Mèxico, Mexico
| | - J. M. Arias
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Sevilla, Spain
- Instituto Carlos I (iCI) de Física Teórica y Computacional, Universidad de Sevilla, Sevilla, Spain
| | - J. Gómez-Camacho
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Sevilla, Spain
- CN de Aceleradores (U. Sevilla, J. Andalucía, CSIC), Sevilla, Spain
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Rodríguez-Arcos M, Bermúdez-Montaña M, Arias JM, Gómez-Camacho J, Orgaz E, Lemus R. Algebraic discrete variable representation approaches: application to interatomic effective potentials. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1876264] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- M. Rodríguez-Arcos
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Coyoacan, México, DF, México
| | - M. Bermúdez-Montaña
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Coyoacan, México, DF, México
- Facultad de Química, Universidad Nacional Autónoma de México, Coyoacan, México, DF, México
| | - J. M. Arias
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Sevilla, Spain
- Instituto Carlos I (iCI) de Física Teórica y Computacional, Universidad de Sevilla, Sevilla, Spain
| | - J. Gómez-Camacho
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Sevilla, Spain
- CN de Aceleradores (U. Sevilla, J. Andalucía, CSIC), Sevilla, Spain
| | - E. Orgaz
- Facultad de Química, Universidad Nacional Autónoma de México, Coyoacan, México, DF, México
| | - R. Lemus
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Coyoacan, México, DF, México
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Affiliation(s)
- M. Rodríguez-Arcos
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, México, DF, México
| | - R. Lemus
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, México, DF, México
| | - J. M. Arias
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Sevilla, Spain
- Instituto Carlos I (iCI) de Física Teórica y Computacional, Universidad de Sevilla, Sevilla, Spain
| | - J. Gómez-Camacho
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Sevilla, Spain
- CN de Aceleradores (U. Sevilla, J. Andalucía,CSIC), Sevilla, Spain
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Estévez-Fregoso MM, Arias JM, Gómez-Camacho J, Lemus R. An approach to establish a connection between algebraic and configuration spaces: su(ν + 1) algebraic model for vibrational excitations. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1471229] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- M. M. Estévez-Fregoso
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - J. M. Arias
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Sevilla, Spain
| | - J. Gómez-Camacho
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Sevilla, Spain
- CN de Aceleradores (U. Sevilla, J. Andalucía, CSIC), Sevilla, Spain
| | - R. Lemus
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
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Santiago RD, Arias JM, Gómez-Camacho J, Lemus R. An approach to establish the connection between configuration and su(n + 1) algebraic spaces in molecular physics: application to ammonia. Mol Phys 2017. [DOI: 10.1080/00268976.2017.1358829] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- R. D. Santiago
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, México, Mexico
| | - J. M. Arias
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Seville, Spain
| | - J. Gómez-Camacho
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Seville, Spain
| | - R. Lemus
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, México, Mexico
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Pesudo V, Borge MJG, Moro AM, Lay JA, Nácher E, Gómez-Camacho J, Tengblad O, Acosta L, Alcorta M, Alvarez MAG, Andreoiu C, Bender PC, Braid R, Cubero M, Di Pietro A, Fernández-García JP, Figuera P, Fisichella M, Fulton BR, Garnsworthy AB, Hackman G, Hager U, Kirsebom OS, Kuhn K, Lattuada M, Marquínez-Durán G, Martel I, Miller D, Moukaddam M, O'Malley PD, Perea A, Rajabali MM, Sánchez-Benítez AM, Sarazin F, Scuderi V, Svensson CE, Unsworth C, Wang ZM. Scattering of the Halo Nucleus ^{11}Be on ^{197}Au at Energies around the Coulomb Barrier. Phys Rev Lett 2017; 118:152502. [PMID: 28452556 DOI: 10.1103/physrevlett.118.152502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Indexed: 06/07/2023]
Abstract
Angular distributions of the elastic, inelastic, and breakup cross sections of the halo nucleus ^{11}Be on ^{197}Au were measured at energies below (E_{lab}=31.9 MeV) and around (39.6 MeV) the Coulomb barrier. These three channels were unambiguously separated for the first time for reactions of ^{11}Be on a high-Z target at low energies. The experiment was performed at TRIUMF (Vancouver, Canada). The differential cross sections were compared with three different calculations: semiclassical, inert-core continuum-coupled-channels and continuum-coupled-channels ones with including core deformation. These results show conclusively that the elastic and inelastic differential cross sections can only be accounted for if core-excited admixtures are taken into account. The cross sections for these channels strongly depend on the B(E1) distribution in ^{11}Be, and the reaction mechanism is sensitive to the entanglement of core and halo degrees of freedom in ^{11}Be.
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Affiliation(s)
- V Pesudo
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
- Department of Physics, University of the Western Cape, P/B X17, Bellville ZA-7535, South Africa
- iThemba LABS, Somerset West 7129, South Africa
| | - M J G Borge
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
- ISOLDE-EP, CERN, CH-1211 Geneva 23, Switzerland
| | - A M Moro
- Departamento de FAMN, Universidad de Sevilla, 41080 Sevilla, Spain
| | - J A Lay
- Dipartimento di Fisica e Astr. "Galileo Galilei", Univ. di Padova, 35131 Padova, Italy
- INFN, Sezione di Padova, via Marzolo, 8, 35131 Padova, Italy
| | - E Nácher
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - J Gómez-Camacho
- Departamento de FAMN, Universidad de Sevilla, 41080 Sevilla, Spain
- CN de Aceleradores (U. Sevilla, J. Andalucía, CSIC), 41092 Sevilla, Spain
| | - O Tengblad
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - L Acosta
- Instituto de Física, Universidad Nacional Autónoma de México, A.P. 20-364, Cd.Mx. 01000 Mexico
| | - M Alcorta
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - M A G Alvarez
- Instituto de Física, Universidade de São Paulo, 05508-090 São Paulo, Brazil
| | - C Andreoiu
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
| | - P C Bender
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - R Braid
- Physics Department, Colorado School of Mines, Golden, Colorado 80401, USA
| | - M Cubero
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
- CICANUM, Universidad de Costa Rica, Apdo. 2060 San José, Costa Rica
| | - A Di Pietro
- Laboratori Nazionali del Sud, INFN, via Santa Sofia 62, 95123 Catania, Italy
| | - J P Fernández-García
- Departamento de FAMN, Universidad de Sevilla, 41080 Sevilla, Spain
- Laboratori Nazionali del Sud, INFN, via Santa Sofia 62, 95123 Catania, Italy
- CN de Aceleradores (U. Sevilla, J. Andalucía, CSIC), 41092 Sevilla, Spain
| | - P Figuera
- Laboratori Nazionali del Sud, INFN, via Santa Sofia 62, 95123 Catania, Italy
| | - M Fisichella
- Laboratori Nazionali del Sud, INFN, via Santa Sofia 62, 95123 Catania, Italy
| | - B R Fulton
- Department of Physics, University of York, YO 10 5DD Heslington, York, United Kingdom
| | - A B Garnsworthy
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - G Hackman
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - U Hager
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - O S Kirsebom
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus, Denmark
| | - K Kuhn
- Physics Department, Colorado School of Mines, Golden, Colorado 80401, USA
| | - M Lattuada
- Laboratori Nazionali del Sud, INFN, via Santa Sofia 62, 95123 Catania, Italy
- Dipartimento di Fisica e Astronomia, via Santa Sofia 64, 95123 Catania, Italy
| | - G Marquínez-Durán
- Departamento de Ciencias integradas, Universidad de Huelva, 21071 Huelva, Spain
| | - I Martel
- Departamento de Ciencias integradas, Universidad de Huelva, 21071 Huelva, Spain
| | - D Miller
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - M Moukaddam
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - P D O'Malley
- Physics Department, Colorado School of Mines, Golden, Colorado 80401, USA
| | - A Perea
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - M M Rajabali
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - A M Sánchez-Benítez
- Departamento de Ciencias integradas, Universidad de Huelva, 21071 Huelva, Spain
| | - F Sarazin
- Physics Department, Colorado School of Mines, Golden, Colorado 80401, USA
| | - V Scuderi
- Laboratori Nazionali del Sud, INFN, via Santa Sofia 62, 95123 Catania, Italy
| | - C E Svensson
- Department of Physics. University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - C Unsworth
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - Z M Wang
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
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Pesudo V, Borge M, Moro A, Lay J, Nácher E, Gómez-Camacho J, Tengblad O, Acosta L, Alcorta M, Alvarez M, Andreoiu C, Bender P, Braid R, Cubero M, Di Pietro A, Fernández-García J, Figuera P, Fisichella M, Fulton B, Garnsworthy A, Hackman G, Hager U, Kirsebom O, Kuhn K, Lattuada M, Marquínez-Durán G, Martel I, Miller D, Moukaddam M, O'Malley P, Perea A, Rajabali M, Sánchez-Benítez A, Sarazin F, Scuderi V, Svensson C, Unsworth C, Wang Z. Scattering of halo nuclei on heavy targets at energies around the Coulomb barrier: The case of 11Be on 197Au. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201716300045] [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: 11/14/2022] Open
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9
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10
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11
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Fernández-García JP, Cubero M, Acosta L, Alcorta M, Alvarez MAG, Borge MJG, Buchmann L, Diget CA, Falou HA, Fulton BR, Fynbo HOU, Galaviz D, Gómez-Camacho J, Kanungo R, Lay JA, Madurga M, Martel I, Moro AM, Mukha I, Nilsson T, Rodríguez-Gallardo M, Sánchez-Benítez AM, Shotter A, Tengblad O, Walden P. 11Li structural information from inclusive break-up measurements. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20158801003] [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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12
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Marquínez-Durán G, Sánchez-Benítez A, Martel I, Acosta L, Rusek K, Álvarez M, Berjillos R, Borge M, Chbihi A, Cruz C, Cubero M, Dueñas J, Fernández-García J, Fernández-Martínez B, Flores J, Gómez-Camacho J, Keeley N, Labrador J, Marqués M, Moro A, Mazzocco M, Pakou A, Parkar V, Patronis N, Pesudo V, Pierrotsakou D, Raabe R, Silvestri R, Soic N, Standylo Ł, Strojek I, Tengblad O, Wolski R, Ziad A. Near barrier scattering of8He on208Pb. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603058] [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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13
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Lay JA, Moro AM, Arias J, Gómez-Camacho J. Core excitations in the structure and reactions of halo nuclei. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603053] [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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14
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Fernández-García JP, Cubero M, Rodríguez-Gallardo M, Acosta L, Alcorta M, Alvarez MAG, Borge MJG, Buchmann L, Diget CA, Falou HA, Fulton BR, Fynbo HOU, Galaviz D, Gómez-Camacho J, Kanungo R, Lay JA, Madurga M, Martel I, Moro AM, Mukha I, Nilsson T, Sánchez-Benítez AM, Shotter A, Tengblad O, Walden P. 11Li Breakup on 208 at energies around the Coulomb barrier. Phys Rev Lett 2013; 110:142701. [PMID: 25166983 DOI: 10.1103/physrevlett.110.142701] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/22/2012] [Indexed: 06/03/2023]
Abstract
The inclusive breakup for the (11)Li + (208)Pb reaction at energies around the Coulomb barrier has been measured for the first time. A sizable yield of (9)Li following the (11)Li dissociation has been observed, even at energies well below the Coulomb barrier. Using the first-order semiclassical perturbation theory of Coulomb excitation it is shown that the breakup probability data measured at small angles can be used to extract effective breakup energy as well as the slope of B(E1) distribution close to the threshold. Four-body continuum-discretized coupled-channels calculations, including both nuclear and Coulomb couplings between the target and projectile to all orders, reproduce the measured inclusive breakup cross sections and support the presence of a dipole resonance in the (11)Li continuum at low excitation energy.
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Affiliation(s)
- J P Fernández-García
- Departamento de FAMN, Universidad de Sevilla, Apartado 1065, E-41080 Seville, Spain and Centro Nacional de Aceleradores, Universidad de Sevilla/Junta de Andalucía/CSIC, E-41092 Seville, Spain
| | - M Cubero
- Instituto de Estructura de la Materia-CSIC, E-28006 Madrid, Spain and Centro de Investigación en Ciencias Atómicas, Nucleares y Moleculares (CICANUM), CR-2060 San José, Costa Rica
| | - M Rodríguez-Gallardo
- Departamento de FAMN, Universidad de Sevilla, Apartado 1065, E-41080 Seville, Spain
| | - L Acosta
- Istituto Nazionali di Fisica Nucleare-Laboratori Nazionali del Sud (INFN-LNS), I-95123 Catania, Italy and Departamento de Física Aplicada, Universidad de Huelva, E-21071 Huelva, Spain
| | - M Alcorta
- Instituto de Estructura de la Materia-CSIC, E-28006 Madrid, Spain
| | - M A G Alvarez
- Departamento de FAMN, Universidad de Sevilla, Apartado 1065, E-41080 Seville, Spain and Centro Nacional de Aceleradores, Universidad de Sevilla/Junta de Andalucía/CSIC, E-41092 Seville, Spain
| | - M J G Borge
- Instituto de Estructura de la Materia-CSIC, E-28006 Madrid, Spain
| | - L Buchmann
- TRIUMF, Vancouver, British Columbia V-6T2A3, Canada
| | - C A Diget
- Departament of Physics, University of York, YO1O-5DD Heslington, York, United Kingdom
| | - H A Falou
- Department of Astronomy and Physics, Saint Mary's University, Halifax B3H3C3, Canada
| | - B R Fulton
- Departament of Physics, University of York, YO1O-5DD Heslington, York, United Kingdom
| | - H O U Fynbo
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus, Denmark
| | - D Galaviz
- Centro de Física Nuclear da Universidade de Lisboa (CFNUL), 1649-003 Lisbon, Portugal
| | - J Gómez-Camacho
- Departamento de FAMN, Universidad de Sevilla, Apartado 1065, E-41080 Seville, Spain and Centro Nacional de Aceleradores, Universidad de Sevilla/Junta de Andalucía/CSIC, E-41092 Seville, Spain
| | - R Kanungo
- Department of Astronomy and Physics, Saint Mary's University, Halifax B3H3C3, Canada
| | - J A Lay
- Departamento de FAMN, Universidad de Sevilla, Apartado 1065, E-41080 Seville, Spain
| | - M Madurga
- Instituto de Estructura de la Materia-CSIC, E-28006 Madrid, Spain
| | - I Martel
- Departamento de Física Aplicada, Universidad de Huelva, E-21071 Huelva, Spain
| | - A M Moro
- Departamento de FAMN, Universidad de Sevilla, Apartado 1065, E-41080 Seville, Spain
| | - I Mukha
- Departamento de FAMN, Universidad de Sevilla, Apartado 1065, E-41080 Seville, Spain
| | - T Nilsson
- Fundamental Physics, Chalmers University of Technology, S-41296 Göteborg, Sweden
| | - A M Sánchez-Benítez
- Departamento de Física Aplicada, Universidad de Huelva, E-21071 Huelva, Spain
| | - A Shotter
- School of Physics and Astronomy, University of Edinburgh, EH9 3JZ Edinburgh, United Kingdom
| | - O Tengblad
- Instituto de Estructura de la Materia-CSIC, E-28006 Madrid, Spain
| | - P Walden
- TRIUMF, Vancouver, British Columbia V-6T2A3, Canada
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15
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Cubero M, Fernández-García JP, Rodríguez-Gallardo M, Acosta L, Alcorta M, Alvarez MAG, Borge MJG, Buchmann L, Diget CA, Al Falou H, Fulton BR, Fynbo HOU, Galaviz D, Gómez-Camacho J, Kanungo R, Lay JA, Madurga M, Martel I, Moro AM, Mukha I, Nilsson T, Sánchez-Benítez AM, Shotter A, Tengblad O, Walden P. Do halo nuclei follow Rutherford elastic scattering at energies below the barrier? The case of 11Li. Phys Rev Lett 2012; 109:262701. [PMID: 23368554 DOI: 10.1103/physrevlett.109.262701] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Indexed: 06/01/2023]
Abstract
The first measurement of the elastic scattering of the halo nucleus 11Li and its core 9Li on 208Pb at energies near the Coulomb barrier is presented. The 11Li+208Pb elastic scattering shows a strong reduction with respect to the Rutherford cross section, even at energies well below the barrier and down to very small scattering angles. This drastic change of the elastic differential cross section observed in 11Li+208Pb is the consequence of the halo structure of 11Li, as it is not observed in the elastic scattering of its core 9Li at the same energies. Four-body continuum-discretized coupled-channels calculations, based on a three-body model of the 11Li projectile, are found to explain the measured angular distributions and confirm that the observed reduction is mainly due to the strong Coulomb coupling to the dipole states in the low-lying continuum of 11Li. These calculations suggest the presence of a low-lying dipole resonance in 11Li close to the breakup threshold.
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Affiliation(s)
- M Cubero
- Instituto de Estructura de la Materia CSIC, E28006 Madrid, Spain
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16
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Santiago R, Álvarez-Bajo O, Arias J, Gómez-Camacho J, Lemus R. An algebraic description of anharmonic diatom–diatom inelastic collisions in the semiclassical approximation. Mol Phys 2012. [DOI: 10.1080/00268976.2012.685896] [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: 10/28/2022]
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17
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Cubero M, Fernández-Garcia J, Lay J, Acosta L, Alcorta M, Madurga M, Alvarez M, Borge M, Buchmann L, Diget C, Fulton B, Fynbo H, Galaviz D, Gómez-Camacho J, Martel I, Moro A, Mukha I, Nilsson T, Sánchez-Benítez A, Shotter A, Tengblad O, Walden P. Scattering of9Li on208Pb at energies around the Coulomb barrier. EPJ Web of Conferences 2011. [DOI: 10.1051/epjconf/20111716002] [Citation(s) in RCA: 5] [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: 11/14/2022] Open
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18
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Álvarez-Bajo O, Arias J, Gómez-Camacho J, Lemus R. An approach to the study of the continuum effects in systems of interacting Morse oscillators. Mol Phys 2008. [DOI: 10.1080/00268970802206459] [Citation(s) in RCA: 6] [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: 10/21/2022]
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19
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Mukha I, Sümmerer K, Acosta L, Alvarez MAG, Casarejos E, Chatillon A, Cortina-Gil D, Espino J, Fomichev A, García-Ramos JE, Geissel H, Gómez-Camacho J, Grigorenko L, Hoffmann J, Kiselev O, Korsheninnikov A, Kurz N, Litvinov Y, Martel I, Nociforo C, Ott W, Pfutzner M, Rodríguez-Tajes C, Roeckl E, Stanoiu M, Weick H, Woods PJ. Observation of two-proton radioactivity of 19Mg by tracking the decay products. Phys Rev Lett 2007; 99:182501. [PMID: 17995400 DOI: 10.1103/physrevlett.99.182501] [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: 03/27/2007] [Indexed: 05/25/2023]
Abstract
We have observed the two-proton radioactivity of the previously unknown (19)Mg ground state by tracking the decay products in-flight. For the first time, the trajectories of the 2p-decay products, (17)Ne+p+p, have been measured by using tracking microstrip detectors which allowed us to reconstruct the 2p-decay vertices and fragment correlations. The half-life of (19)Mg deduced from the measured vertex distribution is 4.0(15) ps in the system of (19)Mg. The Q value of the 2p decay of the (19)Mg ground state inferred from the measured p-p-(17)Ne correlations is 0.75(5) MeV.
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Affiliation(s)
- I Mukha
- Universidad de Sevilla, ES-41012 Seville, Spain.
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Davis NJ, Shepherd-Themistocleous CH, Shotter AC, Davinson T, Ireland DG, Livingston K, Macdonald EW, Page RD, Sellin PJ, Woods PJ, Clarke NM, Tungate G, Griffith JA, Hall SJ, Karban O, Martel-Bravo I, Nelson JM, Rusek K, Gómez-Camacho J. Tensor analyzing powers for 7Li breakup. Phys Rev C Nucl Phys 1995; 52:3201-3211. [PMID: 9970867 DOI: 10.1103/physrevc.52.3201] [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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21
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Gómez-Camacho J, Arias JM, Nagarajan MA. Analytic description of the scattering of electrons by molecules. Phys Rev A 1995; 51:3799-3811. [PMID: 9912051 DOI: 10.1103/physreva.51.3799] [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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22
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Andrés MV, Gómez-Camacho J, Nagarajan MA. Geometric interpretation of the effect of the quadrupole force in the collisions of deformed nuclei. Phys Rev C Nucl Phys 1992; 45:1339-1346. [PMID: 9967880 DOI: 10.1103/physrevc.45.1339] [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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