Signature of 0+ excited state and shape coexistence in 94Kr through 93Kr(d,p)94Kr reaction
A measurement of the excitation spectrum of 94Kr via one-neutron transfer to the ground state of 93Kr using the 93Kr(d,p)94Kr reaction at 8A MeV, observing the outgoing protons, performed with the IRIS facility at TRIUMF is reported. Two states in 94Kr, at 1.50±0.14 MeV and 2.20±0.14 MeV, were obser...
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Elsevier
2025-03-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325001121 |
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| author | D. Walter R. Kanungo M. Holl S. Roy-Garand B.S. Hu J.D. Holt M. Alcorta C. Andreoiu S. Bhattacharjee A.A. Chen A. Chester D. Connolly B. Davids N. Esker F. Garcia S. Gillespie G. Hackman S. Ishimoto R. Krücken P. Jassal J. Laroche J. Liang B. Olaizola A. Psaltis J. Smallcombe I.J. Thompson C. Waterfield |
| author_facet | D. Walter R. Kanungo M. Holl S. Roy-Garand B.S. Hu J.D. Holt M. Alcorta C. Andreoiu S. Bhattacharjee A.A. Chen A. Chester D. Connolly B. Davids N. Esker F. Garcia S. Gillespie G. Hackman S. Ishimoto R. Krücken P. Jassal J. Laroche J. Liang B. Olaizola A. Psaltis J. Smallcombe I.J. Thompson C. Waterfield |
| author_sort | D. Walter |
| collection | DOAJ |
| description | A measurement of the excitation spectrum of 94Kr via one-neutron transfer to the ground state of 93Kr using the 93Kr(d,p)94Kr reaction at 8A MeV, observing the outgoing protons, performed with the IRIS facility at TRIUMF is reported. Two states in 94Kr, at 1.50±0.14 MeV and 2.20±0.14 MeV, were observed. An adiabatic-wave approximation analysis of the differential cross sections leads us to identify the lower energy state as being populated with neutron transfer to the 3s1/2 orbital. This leads to the first observation of the lowest 0+ excited state in 94Kr, hence signaling shape co-existence. Theoretical calculations performed within the in-medium similarity renormalization group framework are presented that also show the existence of a low-energy 0+ state, aligning qualitatively with the observation. |
| format | Article |
| id | doaj-art-7f265b5f70c9499790549cb8eb4549cd |
| institution | OA Journals |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-7f265b5f70c9499790549cb8eb4549cd2025-08-20T01:57:39ZengElsevierPhysics Letters B0370-26932025-03-0186213935210.1016/j.physletb.2025.139352Signature of 0+ excited state and shape coexistence in 94Kr through 93Kr(d,p)94Kr reactionD. Walter0R. Kanungo1M. Holl2S. Roy-Garand3B.S. Hu4J.D. Holt5M. Alcorta6C. Andreoiu7S. Bhattacharjee8A.A. Chen9A. Chester10D. Connolly11B. Davids12N. Esker13F. Garcia14S. Gillespie15G. Hackman16S. Ishimoto17R. Krücken18P. Jassal19J. Laroche20J. Liang21B. Olaizola22A. Psaltis23J. Smallcombe24I.J. Thompson25C. Waterfield26Astronomy and Physics Department, Saint Mary's University, Halifax, NS, B3H 3C3, Canada; TRIUMF, Vancouver, BC, V6T 2A3, CanadaAstronomy and Physics Department, Saint Mary's University, Halifax, NS, B3H 3C3, Canada; TRIUMF, Vancouver, BC, V6T 2A3, Canada; Corresponding author.Astronomy and Physics Department, Saint Mary's University, Halifax, NS, B3H 3C3, Canada; TRIUMF, Vancouver, BC, V6T 2A3, CanadaAstronomy and Physics Department, Saint Mary's University, Halifax, NS, B3H 3C3, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaDepartment of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaDepartment of Physics and Astronomy, McMaster University, Hamilton, ON, L8S 481, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaTRIUMF, Vancouver, BC, V6T 2A3, Canada; Department of Physics, Simon Fraser University, Burnaby, BC, V5A 1S6, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaDepartment of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaHigh Energy Accelerator Research Organization (KEK), Ibaraki 305-0801, JapanTRIUMF, Vancouver, BC, V6T 2A3, Canada; Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USAAstronomy and Physics Department, Saint Mary's University, Halifax, NS, B3H 3C3, CanadaAstronomy and Physics Department, Saint Mary's University, Halifax, NS, B3H 3C3, CanadaDepartment of Physics and Astronomy, McMaster University, Hamilton, ON, L8S 481, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaDepartment of Physics and Astronomy, McMaster University, Hamilton, ON, L8S 481, CanadaTRIUMF, Vancouver, BC, V6T 2A3, CanadaLawrence Livermore National Laboratory, P.O. Box 808, L-414, Livermore, CA 94551, USAAstronomy and Physics Department, Saint Mary's University, Halifax, NS, B3H 3C3, CanadaA measurement of the excitation spectrum of 94Kr via one-neutron transfer to the ground state of 93Kr using the 93Kr(d,p)94Kr reaction at 8A MeV, observing the outgoing protons, performed with the IRIS facility at TRIUMF is reported. Two states in 94Kr, at 1.50±0.14 MeV and 2.20±0.14 MeV, were observed. An adiabatic-wave approximation analysis of the differential cross sections leads us to identify the lower energy state as being populated with neutron transfer to the 3s1/2 orbital. This leads to the first observation of the lowest 0+ excited state in 94Kr, hence signaling shape co-existence. Theoretical calculations performed within the in-medium similarity renormalization group framework are presented that also show the existence of a low-energy 0+ state, aligning qualitatively with the observation.http://www.sciencedirect.com/science/article/pii/S0370269325001121Neutron-rich nucleiTransfer reactionInverse kinematicsShell structureExcited states |
| spellingShingle | D. Walter R. Kanungo M. Holl S. Roy-Garand B.S. Hu J.D. Holt M. Alcorta C. Andreoiu S. Bhattacharjee A.A. Chen A. Chester D. Connolly B. Davids N. Esker F. Garcia S. Gillespie G. Hackman S. Ishimoto R. Krücken P. Jassal J. Laroche J. Liang B. Olaizola A. Psaltis J. Smallcombe I.J. Thompson C. Waterfield Signature of 0+ excited state and shape coexistence in 94Kr through 93Kr(d,p)94Kr reaction Physics Letters B Neutron-rich nuclei Transfer reaction Inverse kinematics Shell structure Excited states |
| title | Signature of 0+ excited state and shape coexistence in 94Kr through 93Kr(d,p)94Kr reaction |
| title_full | Signature of 0+ excited state and shape coexistence in 94Kr through 93Kr(d,p)94Kr reaction |
| title_fullStr | Signature of 0+ excited state and shape coexistence in 94Kr through 93Kr(d,p)94Kr reaction |
| title_full_unstemmed | Signature of 0+ excited state and shape coexistence in 94Kr through 93Kr(d,p)94Kr reaction |
| title_short | Signature of 0+ excited state and shape coexistence in 94Kr through 93Kr(d,p)94Kr reaction |
| title_sort | signature of 0 excited state and shape coexistence in 94kr through 93kr d p 94kr reaction |
| topic | Neutron-rich nuclei Transfer reaction Inverse kinematics Shell structure Excited states |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325001121 |
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