In-gas-cell laser spectroscopy of the magnetic dipole moment of the N126 isotope Pt199

Y. Hirayama, M. Mukai, Y. X. Watanabe, M. Ahmed, S. C. Jeong, H. S. Jung, Y. Kakiguchi, S. Kanaya, S. Kimura, J. Y. Moon, T. Nakatsukasa, M. Oyaizu, J. H. Park, P. Schury, A. Taniguchi, M. Wada, K. Washiyama, H. Watanabe, and H. Miyatake
Phys. Rev. C 96, 014307 – Published 11 July 2017

Abstract

The magnetic dipole moment and mean-square charge radius of Pt199g (Iπ= 5/2,t1/2=30.8 min) ground state and Pt199m (Eex=424 keV, Iπ= (13/2)+,t1/2=13.6 s) isomeric state are evaluated for the first time from investigations of the hyperfine splitting of the λ1=248.792 nm transition by in-gas-cell laser ionization spectroscopy. Ground and isomeric states of neutron-rich Pt199 nucleus were produced by a multinucleon transfer reaction at the KEK Isotope Separation System (KISS), designed for the study of nuclear spectroscopy in the vicinity of N=126. The measured magnetic dipole moments +0.75(8)μN and 0.57(5)μN are consistent with the systematics of those of nuclei with Iπ= 5/2 and Iπ= 13/2+, respectively.

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  • Received 21 July 2016
  • Revised 28 May 2017

DOI:https://doi.org/10.1103/PhysRevC.96.014307

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Y. Hirayama1,*, M. Mukai1,2,3, Y. X. Watanabe1, M. Ahmed1,2, S. C. Jeong1,4, H. S. Jung1, Y. Kakiguchi1, S. Kanaya3,5, S. Kimura1,2,3, J. Y. Moon4, T. Nakatsukasa2, M. Oyaizu1, J. H. Park4, P. Schury1, A. Taniguchi6, M. Wada1,3, K. Washiyama2, H. Watanabe3,7, and H. Miyatake1

  • 1Wako Nuclear Science Center (WNSC), Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Wako, Saitama 351-0198, Japan
  • 2Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
  • 3Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
  • 4Rare Isotope Science Project, Institute for Basic Science (IBS), Daejeon 305-811, Republic of Korea
  • 5Department of Physics, Osaka University, Toyonaka, Osaka 563-0043, Japan
  • 6Research Reactor Institute, Kyoto University, Kumatori, Osaka, 590-0494, Japan
  • 7IRCNPC, School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China

  • *yoshikazu.hirayama@kek.jp

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Issue

Vol. 96, Iss. 1 — July 2017

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