Impact of shell evolution on Gamow-Teller β decay from a high-spin long-lived isomer in 127Ag

H Watanabe; C.X Yuan; G Lorusso; S Nishimura; Zs. Podolyák; Z.Y Xu; T Sumikama; P.-A Söderström; P Doornenbal; F Browne; G Gey; H.S Jung; J Taprogge; Zs Vajta; H.K Wang; J Wu; G Benzoni; A Yagi; H Baba; F.C.L Crespi; N Fukuda; K.Y Chae; R Gernhäuser; N Inabe; T Isobe; A Jungclaus; D Kameda; G.D Kim; I Kojouharov; F.G Kondev; T Kubo; N Kurz; Y.K Kwon; G.J Lane; C.-B Moon; A Montaner-Pizá; K Moschner; F Naqvi; M Niikura; H Nishibata; D Nishimura; A Odahara; R Orlandi; Z Patel; Zs Podolyák; H Sakurai; H Schaffner; G.S Simpson; K Steiger; H Suzuki; H Takeda; A Wendt; K Yoshinaga

doi:10.1016/j.physletb.2021.136766

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Impact of shell evolution on Gamow-Teller β decay from a high-spin long-lived isomer in 127Ag

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Impact of shell evolution on Gamow-Teller β decay from a high-spin long-lived isomer in 127Ag

H Watanabe, C.X Yuan, G Lorusso, S Nishimura, Zs. Podolyák, Z.Y Xu, T Sumikama, P.-A Söderström, P Doornenbal, F Browne, …

Physics Letters B, Vol.823, 136766

10/12/2021

DOI: https://doi.org/10.1016/j.physletb.2021.136766

Abstract

127Ag

Gamow-Teller β decay

Isomer

Radioactive isotope beam

Shell evolution

The change of the shell structure in atomic nuclei, so-called “nuclear shell evolution”, occurs due to changes of major configurations through particle-hole excitations inside one nucleus, as well as due to variation of the number of constituent protons or neutrons. We have investigated how the shell evolution affects Gamow-Teller (GT) transitions that dominate the β decay in the region below 132Sn using the newly obtained experimental data on a long-lived isomer in 127Ag. The T1/2=67.5(9) ms isomer has been identified with a spin and parity of (27/2+) at an excitation energy of 1942−20+14 keV, and found to decay via an internal transition of an E3 character, which competes with the dominant β-decay branches towards the high-spin states in 127Cd. The underlying mechanism of a strong GT transition from the 127Ag isomer is discussed in terms of configuration-dependent optimization of the effective single-particle energies in the framework of a shell-model approach.

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Title: Impact of shell evolution on Gamow-Teller β decay from a high-spin long-lived isomer in 127Ag
Creators: H Watanabe - School of Physics, and International Research Cernter for Nuclei and Particles in Cosmos, Beihang University, Beijing 100191, China
C.X Yuan - Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082, Guangdong, China
G Lorusso - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
S Nishimura - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Zs. Podolyák - University of Surrey, School of Maths and Physics
Z.Y Xu - University of Surrey, School of Computer Science and Electronic Engineering
T Sumikama - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
P.-A Söderström - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
P Doornenbal - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
F Browne - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
G Gey - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
H.S Jung - Department of Physics, Chung-Ang University, Seoul 156-756, Republic of Korea
J Taprogge - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Zs Vajta - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
H.K Wang - College of Physics and Telecommunication Engineering, Zhoukou Normal University, Henan 466000, China
J Wu - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
G Benzoni - INFN, Sezione di Milano, via Celoria 16, I-20133 Milano, Italy
A Yagi - Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043 Toyonaka, Japan
H Baba - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
F.C.L Crespi - INFN, Sezione di Milano, via Celoria 16, I-20133 Milano, Italy
N Fukuda - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
K.Y Chae - Department of Physics, Sungkyunkwan University, Suwon 440-746, Republic of Korea
R Gernhäuser - Physik Department, Technische Universität München, D-85748 Garching, Germany
N Inabe - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
T Isobe - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
A Jungclaus - Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
D Kameda - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
G.D Kim - Rare Isotope Science Project, Institute for Basic Science, Daejeon 305-811, Republic of Korea
I Kojouharov - GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
F.G Kondev - Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
T Kubo - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
N Kurz - GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
Y.K Kwon - Rare Isotope Science Project, Institute for Basic Science, Daejeon 305-811, Republic of Korea
G.J Lane - Department of Nuclear Physics, R.S.P.E., Australian National University, Canberra, A.C.T 2601, Australia
C.-B Moon - Department of Display Engineering, Hoseo University, Chung-Nam 336-795, Republic of Korea
A Montaner-Pizá - IFIC, CSIC-Universidad de Valencia, A.C. 22085, E 46071, Valencia, Spain
K Moschner - Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
F Naqvi - Wright Nuclear Structure Laboratory, Yale University, New Haven, CT 06520-8120, USA
M Niikura - Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
H Nishibata - Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043 Toyonaka, Japan
D Nishimura - Department of Physics, Tokyo City University, Setagaya-ku, Tokyo 158-8557, Japan
A Odahara - Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043 Toyonaka, Japan
R Orlandi - Instituut voor Kern en Stralingsfysica, KU Leuven, University of Leuven, B-3001 Leuven, Belgium
Z Patel - University of Surrey
Zs Podolyák - Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
H Sakurai - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
H Schaffner - GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
G.S Simpson - LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble, F-38026 Grenoble Cedex, France
K Steiger - Physik Department, Technische Universität München, D-85748 Garching, Germany
H Suzuki - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
H Takeda - RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
A Wendt - Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
K Yoshinaga - Department of Physics, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan
Publication Details: Physics Letters B, Vol.823, 136766
Publisher: Elsevier
Date published: 10/12/2021
Date accepted: 01/11/2021
Grant note: © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license. (http://creativecommons.org/licenses/by/4.0/)
Identifiers: 99618065302346
Academic Unit: School of Maths and Physics; School of Computer Science and Electronic Engineering
Language: English
Resource Type: Journal article

Impact of shell evolution on Gamow-Teller β decay from a high-spin long-lived isomer in 127Ag

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