Ground-state β-decay spectroscopy of Ta187

M. Mukai, Y. Hirayama, Y. X. Watanabe, H. Watanabe, H. Koura, S. C. Jeong, H. Miyatake, M. Brunet, S. Ishizawa, F. G. Kondev, G. J. Lane, Yu. A. Litvinov, T. Niwase, M. Oyaizu, Zs. Podolyák, M. Rosenbusch, P. Schury, M. Wada, and P. M. Walker
Phys. Rev. C 105, 034331 – Published 25 March 2022

Abstract

Beta-decay spectroscopy of the Ta187 ground state was performed at the KEK Isotope Separation System. β-delayed γ rays corresponding to the previously reported in-beam transitions were observed. The β-decay half-life of the Ta187 ground state was determined to be 283(10) s by analyzing a time spectrum of βγ coincidence events. The β-decay branching ratio and log(ft) values were evaluated for the first time. Based on the newly evaluated log(ft) values of >6.0 and a decay scheme, spin-parity values of Iπ=7/2+ originating from the odd-proton orbit π7/2[404] were assigned with high confidence, which is consistent with the systematics of neighboring odd-A nuclides.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 29 November 2021
  • Accepted 18 February 2022
  • Corrected 1 April 2022

DOI:https://doi.org/10.1103/PhysRevC.105.034331

©2022 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Corrections

1 April 2022

Correction: Entries that should have appeared in the last two columns of Table I were incorrectly placed during the production process and have been fixed.

Authors & Affiliations

M. Mukai1,2,*, Y. Hirayama3, Y. X. Watanabe3, H. Watanabe4,3,1, H. Koura5, S. C. Jeong3, H. Miyatake3, M. Brunet6, S. Ishizawa7,1,3, F. G. Kondev8, G. J. Lane9, Yu. A. Litvinov10, T. Niwase11,1,3, M. Oyaizu3, Zs. Podolyák6, M. Rosenbusch3, P. Schury3, M. Wada3, and P. M. Walker6

  • 1Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
  • 2Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
  • 3Wako Nuclear Science Center (WNSC), Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Wako, Saitama 351-0198, Japan
  • 4School of Physics and International Research Center for Nuclei and Particles in Cosmos, Beihang University, Beijing 100191, China
  • 5Advanced Science Research Center, Japan Atomic Energy Agency, Ibaraki 319-1195, Japan
  • 6Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
  • 7Graduate School of Science and Engineering, Yamagata University, Yamagata 992-8510, Japan
  • 8Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
  • 9Department of Nuclear Physics, Research School of Physics, Australian National University, Canberra, Australian Capital Territory 2601, Australia
  • 10GSI Helmholtzzentrum för Schwerionenforschung, 64291 Darmstadt, Germany
  • 11Department of Physics, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan

  • *momo.mukai@riken.jp

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 105, Iss. 3 — March 2022

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×