The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd
The first evidence for β-delayed proton emission from the 16+ spin gap isomer in 96Cd is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. βp branching ratios for the ground state and 16+ is...
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| Language: | English |
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Elsevier
2017-04-01
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| Series: | Physics Letters B |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S037026931730103X |
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English |
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Article |
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DOAJ |
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P.J. Davies H. Grawe K. Moschner A. Blazhev R. Wadsworth P. Boutachkov F. Ameil A. Yagi H. Baba T. Bäck M. Dewald P. Doornenbal T. Faestermann A. Gengelbach J. Gerl R. Gernhäeuser S. Go M. Górska E. Gregor T. Isobe D.G. Jenkins H. Hotaka J. Jolie I. Kojouharov N. Kurz M. Lewitowicz G. Lorusso L. Maier E. Merchan F. Naqvi H. Nishibata D. Nishimura S. Nishimura F. Nowacki N. Pietralla H. Schaffner P.-A. Söderström H.S. Jung K. Steiger T. Sumikama J. Taprogge P. Thöle N. Warr H. Watanabe V. Werner Z.Y. Xu K. Yoshinaga Y. Zhu |
| spellingShingle |
P.J. Davies H. Grawe K. Moschner A. Blazhev R. Wadsworth P. Boutachkov F. Ameil A. Yagi H. Baba T. Bäck M. Dewald P. Doornenbal T. Faestermann A. Gengelbach J. Gerl R. Gernhäeuser S. Go M. Górska E. Gregor T. Isobe D.G. Jenkins H. Hotaka J. Jolie I. Kojouharov N. Kurz M. Lewitowicz G. Lorusso L. Maier E. Merchan F. Naqvi H. Nishibata D. Nishimura S. Nishimura F. Nowacki N. Pietralla H. Schaffner P.-A. Söderström H.S. Jung K. Steiger T. Sumikama J. Taprogge P. Thöle N. Warr H. Watanabe V. Werner Z.Y. Xu K. Yoshinaga Y. Zhu The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd Physics Letters B β-decay βp-decay γ-ray spectroscopy Half-life Shell-model WKB |
| author_facet |
P.J. Davies H. Grawe K. Moschner A. Blazhev R. Wadsworth P. Boutachkov F. Ameil A. Yagi H. Baba T. Bäck M. Dewald P. Doornenbal T. Faestermann A. Gengelbach J. Gerl R. Gernhäeuser S. Go M. Górska E. Gregor T. Isobe D.G. Jenkins H. Hotaka J. Jolie I. Kojouharov N. Kurz M. Lewitowicz G. Lorusso L. Maier E. Merchan F. Naqvi H. Nishibata D. Nishimura S. Nishimura F. Nowacki N. Pietralla H. Schaffner P.-A. Söderström H.S. Jung K. Steiger T. Sumikama J. Taprogge P. Thöle N. Warr H. Watanabe V. Werner Z.Y. Xu K. Yoshinaga Y. Zhu |
| author_sort |
P.J. Davies |
| title |
The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd |
| title_short |
The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd |
| title_full |
The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd |
| title_fullStr |
The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd |
| title_full_unstemmed |
The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd |
| title_sort |
role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96cd |
| publisher |
Elsevier |
| series |
Physics Letters B |
| issn |
0370-2693 1873-2445 |
| publishDate |
2017-04-01 |
| description |
The first evidence for β-delayed proton emission from the 16+ spin gap isomer in 96Cd is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. βp branching ratios for the ground state and 16+ isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of 95Cd. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for ℓ=0,2,4 proton emission from three resonance-like states in 96Ag, that are populated by the β decay of the isomer, and the results compared to the new data. The calculations suggest that ℓ=2 proton emission from the resonance states, which reside ∼5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16+ state. |
| topic |
β-decay βp-decay γ-ray spectroscopy Half-life Shell-model WKB |
| url |
http://www.sciencedirect.com/science/article/pii/S037026931730103X |
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doaj-21b779b12fec4288b0d14520d3b04a352020-11-24T22:37:14ZengElsevierPhysics Letters B0370-26931873-24452017-04-01767C47447910.1016/j.physletb.2017.02.013The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96CdP.J. Davies0H. Grawe1K. Moschner2A. Blazhev3R. Wadsworth4P. Boutachkov5F. Ameil6A. Yagi7H. Baba8T. Bäck9M. Dewald10P. Doornenbal11T. Faestermann12A. Gengelbach13J. Gerl14R. Gernhäeuser15S. Go16M. Górska17E. Gregor18T. Isobe19D.G. Jenkins20H. Hotaka21J. Jolie22I. Kojouharov23N. Kurz24M. Lewitowicz25G. Lorusso26L. Maier27E. Merchan28F. Naqvi29H. Nishibata30D. Nishimura31S. Nishimura32F. Nowacki33N. Pietralla34H. Schaffner35P.-A. Söderström36H.S. Jung37K. Steiger38T. Sumikama39J. Taprogge40P. Thöle41N. Warr42H. Watanabe43V. Werner44Z.Y. Xu45K. Yoshinaga46Y. Zhu47Department of Physics, University of York, York YO10 5DD, United KingdomGSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, GermanyInstitut für Kernphysik, Universität zu Köln, D-50937 Köln, GermanyInstitut für Kernphysik, Universität zu Köln, D-50937 Köln, GermanyDepartment of Physics, University of York, York YO10 5DD, United KingdomIKP, Technische Universität Darmstadt, 64289 Darmstadt, GermanyGSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, GermanyResearch Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, JapanRIKEN Nishina Center, Wako, Saitama 351-0198, JapanDepartment of Physics, Royal Institute of Technology, SE-10691 Stockholm, SwedenInstitut für Kernphysik, Universität zu Köln, D-50937 Köln, GermanyRIKEN Nishina Center, Wako, Saitama 351-0198, JapanPhysik Department E12, Technische Universität München, D-85748 Garching, GermanyDepartment of Physics and Astronomy, Uppsala University, SE-75121 Uppsala, SwedenGSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, GermanyPhysik Department E12, Technische Universität München, D-85748 Garching, GermanyDepartment of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, JapanGSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, GermanyIKP, Technische Universität Darmstadt, 64289 Darmstadt, GermanyRIKEN Nishina Center, Wako, Saitama 351-0198, JapanDepartment of Physics, University of York, York YO10 5DD, United KingdomDepartment of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, JapanInstitut für Kernphysik, Universität zu Köln, D-50937 Köln, GermanyGSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, GermanyGSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, GermanyGrand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM – CNRS/IN2P3, F-14076 Caen Cedex 5, FranceRIKEN Nishina Center, Wako, Saitama 351-0198, JapanPhysik Department E12, Technische Universität München, D-85748 Garching, GermanyIKP, Technische Universität Darmstadt, 64289 Darmstadt, GermanyWright Nuclear Structure Laboratory, Yale University, New Haven, CT 06511, USADepartment of Physics, Osaka University, Toyonaka, Osaka 560-0043, JapanDepartment of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, JapanRIKEN Nishina Center, Wako, Saitama 351-0198, JapanIPHC, IN2p3-CNRS et Universited́e Strasbourg, F-67037 Strasbourg, FranceIKP, Technische Universität Darmstadt, 64289 Darmstadt, GermanyGSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, GermanyRIKEN Nishina Center, Wako, Saitama 351-0198, JapanDepartment of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, JapanPhysik Department E12, Technische Universität München, D-85748 Garching, GermanyDepartment of Physics, Tohoku University, 6-3 Aramaki-Aoba, Aoba, Sendai, Miyagi 980-8578, JapanInstituto de Estructura de la Materia, CSIC, E-28006 Madrid, SpainInstitut für Kernphysik, Universität zu Köln, D-50937 Köln, GermanyInstitut für Kernphysik, Universität zu Köln, D-50937 Köln, GermanyRIKEN Nishina Center, Wako, Saitama 351-0198, JapanIKP, Technische Universität Darmstadt, 64289 Darmstadt, GermanyRIKEN Nishina Center, Wako, Saitama 351-0198, JapanRIKEN Nishina Center, Wako, Saitama 351-0198, JapanDepartment of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, JapanThe first evidence for β-delayed proton emission from the 16+ spin gap isomer in 96Cd is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. βp branching ratios for the ground state and 16+ isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of 95Cd. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for ℓ=0,2,4 proton emission from three resonance-like states in 96Ag, that are populated by the β decay of the isomer, and the results compared to the new data. The calculations suggest that ℓ=2 proton emission from the resonance states, which reside ∼5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16+ state.http://www.sciencedirect.com/science/article/pii/S037026931730103Xβ-decayβp-decayγ-ray spectroscopyHalf-lifeShell-modelWKB |