Evidence of oblate-prolate shape coexistence in the strongly-deformed nucleus 119Cs
Prolate-oblate shape coexistence close to the ground state in the strongly-deformed proton-rich A≈120 nuclei is reported for the first time. One of the four reported bands in 119Cs, built on a 11/2− state at 670 keV, consists of nearly degenerate signature partners, and has properties which unequivo...
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Elsevier
2021-11-01
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| Series: | Physics Letters B |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269321005852 |
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| author | K.K. Zheng C.M. Petrache Z.H. Zhang P.W. Zhao Y.K. Wang A. Astier B.F. Lv P.T. Greenlees T. Grahn R. Julin S. Juutinen M. Luoma J. Ojala J. Pakarinen J. Partanen P. Rahkila P. Ruotsalainen M. Sandzelius J. Sarén H. Tann J. Uusitalo G. Zimba B. Cederwall Ö. Aktas A. Ertoprak W. Zhang S. Guo M.L. Liu I. Kuti B.M. Nyakó D. Sohler J. Timár C. Andreoiu M. Doncel D.T. Joss R.D. Page |
| author_facet | K.K. Zheng C.M. Petrache Z.H. Zhang P.W. Zhao Y.K. Wang A. Astier B.F. Lv P.T. Greenlees T. Grahn R. Julin S. Juutinen M. Luoma J. Ojala J. Pakarinen J. Partanen P. Rahkila P. Ruotsalainen M. Sandzelius J. Sarén H. Tann J. Uusitalo G. Zimba B. Cederwall Ö. Aktas A. Ertoprak W. Zhang S. Guo M.L. Liu I. Kuti B.M. Nyakó D. Sohler J. Timár C. Andreoiu M. Doncel D.T. Joss R.D. Page |
| author_sort | K.K. Zheng |
| collection | DOAJ |
| description | Prolate-oblate shape coexistence close to the ground state in the strongly-deformed proton-rich A≈120 nuclei is reported for the first time. One of the four reported bands in 119Cs, built on a 11/2− state at 670 keV, consists of nearly degenerate signature partners, and has properties which unequivocally indicate the strongly-coupled πh11/2[505]11/2− configuration associated with oblate shape. Together with the decoupled πh11/2[541]3/2− band built on the 11/2− prolate state at 110 keV, for which a half-life of T1/2=55(5)μs has been measured, the new bands bring evidence of shape coexistence at low spin in the proton-rich strongly deformed A≈120 nuclei, a phenomenon predicted since long time, but not yet observed. Calculations using the particle-number conserving cranked shell model and two dimensional tilted axis cranking covariant density functional theory support and well reproduce the observed oblate and prolate coexisting low-energy states in 119Cs. |
| first_indexed | 2024-12-19T18:27:46Z |
| format | Article |
| id | doaj.art-bb5f63769c2145abb535de25789f0ded |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-19T18:27:46Z |
| publishDate | 2021-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-bb5f63769c2145abb535de25789f0ded2022-12-21T20:10:48ZengElsevierPhysics Letters B0370-26932021-11-01822136645Evidence of oblate-prolate shape coexistence in the strongly-deformed nucleus 119CsK.K. Zheng0C.M. Petrache1Z.H. Zhang2P.W. Zhao3Y.K. Wang4A. Astier5B.F. Lv6P.T. Greenlees7T. Grahn8R. Julin9S. Juutinen10M. Luoma11J. Ojala12J. Pakarinen13J. Partanen14P. Rahkila15P. Ruotsalainen16M. Sandzelius17J. Sarén18H. Tann19J. Uusitalo20G. Zimba21B. Cederwall22Ö. Aktas23A. Ertoprak24W. Zhang25S. Guo26M.L. Liu27I. Kuti28B.M. Nyakó29D. Sohler30J. Timár31C. Andreoiu32M. Doncel33D.T. Joss34R.D. Page35Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France; Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France; Corresponding author.Mathematics and Physics Department, North China Electric Power University, Beijing 102206, ChinaState Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, ChinaState Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, ChinaUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, FranceUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France; Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; Oliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 7ZE, United KingdomUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandUniversity of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, FinlandKTH Department of Physics, S-10691 Stockholm, SwedenKTH Department of Physics, S-10691 Stockholm, SwedenKTH Department of Physics, S-10691 Stockholm, SwedenKTH Department of Physics, S-10691 Stockholm, SwedenKey Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, ChinaKey Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, ChinaInstitute for Nuclear Research (Atomki-ELKH), 4001 Debrecen, HungaryInstitute for Nuclear Research (Atomki-ELKH), 4001 Debrecen, HungaryInstitute for Nuclear Research (Atomki-ELKH), 4001 Debrecen, HungaryInstitute for Nuclear Research (Atomki-ELKH), 4001 Debrecen, HungaryDepartment of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, CanadaOliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 7ZE, United KingdomOliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 7ZE, United KingdomOliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 7ZE, United KingdomProlate-oblate shape coexistence close to the ground state in the strongly-deformed proton-rich A≈120 nuclei is reported for the first time. One of the four reported bands in 119Cs, built on a 11/2− state at 670 keV, consists of nearly degenerate signature partners, and has properties which unequivocally indicate the strongly-coupled πh11/2[505]11/2− configuration associated with oblate shape. Together with the decoupled πh11/2[541]3/2− band built on the 11/2− prolate state at 110 keV, for which a half-life of T1/2=55(5)μs has been measured, the new bands bring evidence of shape coexistence at low spin in the proton-rich strongly deformed A≈120 nuclei, a phenomenon predicted since long time, but not yet observed. Calculations using the particle-number conserving cranked shell model and two dimensional tilted axis cranking covariant density functional theory support and well reproduce the observed oblate and prolate coexisting low-energy states in 119Cs.http://www.sciencedirect.com/science/article/pii/S0370269321005852Nuclear reaction:58Ni(64Zn,3p)119CsMeasured γγγ-coincidencesAngular correlationsLinear polarizationModel calculationOblate-prolate coexistence |
| spellingShingle | K.K. Zheng C.M. Petrache Z.H. Zhang P.W. Zhao Y.K. Wang A. Astier B.F. Lv P.T. Greenlees T. Grahn R. Julin S. Juutinen M. Luoma J. Ojala J. Pakarinen J. Partanen P. Rahkila P. Ruotsalainen M. Sandzelius J. Sarén H. Tann J. Uusitalo G. Zimba B. Cederwall Ö. Aktas A. Ertoprak W. Zhang S. Guo M.L. Liu I. Kuti B.M. Nyakó D. Sohler J. Timár C. Andreoiu M. Doncel D.T. Joss R.D. Page Evidence of oblate-prolate shape coexistence in the strongly-deformed nucleus 119Cs Physics Letters B Nuclear reaction:58Ni(64Zn,3p)119Cs Measured γγγ-coincidences Angular correlations Linear polarization Model calculation Oblate-prolate coexistence |
| title | Evidence of oblate-prolate shape coexistence in the strongly-deformed nucleus 119Cs |
| title_full | Evidence of oblate-prolate shape coexistence in the strongly-deformed nucleus 119Cs |
| title_fullStr | Evidence of oblate-prolate shape coexistence in the strongly-deformed nucleus 119Cs |
| title_full_unstemmed | Evidence of oblate-prolate shape coexistence in the strongly-deformed nucleus 119Cs |
| title_short | Evidence of oblate-prolate shape coexistence in the strongly-deformed nucleus 119Cs |
| title_sort | evidence of oblate prolate shape coexistence in the strongly deformed nucleus 119cs |
| topic | Nuclear reaction:58Ni(64Zn,3p)119Cs Measured γγγ-coincidences Angular correlations Linear polarization Model calculation Oblate-prolate coexistence |
| url | http://www.sciencedirect.com/science/article/pii/S0370269321005852 |
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