Eur. Phys. J. A (2005) 24: 249-257
https://doi.org/10.1140/epja/i2004-10145-2

Original Article

High-spin isomer in ⁹³Mo

¹ Center for Nuclear Study, University of Tokyo, Hirosawa 2-1, 351-0198, Wako, Saitama, Japan
² Cyclotron Center, RIKEN, Hirosawa 2-1, 351-0198, Wako, Saitama, Japan
³ Nishinippon Institute of Technology, 800-0361, Kanda, Fukuoka, Japan
⁴ Department of Physics, Kyushu University, Hakozaki 6-10-1, 812-8581, Fukuoka, Japan
⁵ Cyclotron and Radioisotope Center, Tohoku University, 980-8578, Sendai, Japan
⁶ Department of Physics, Chung-Ang University, 156-756, Seoul, Korea

^* e-mail: fukuchi@cns.s.u-tokyo.ac.jp

Received: 6 May 2004
Accepted: 14 March 2005
Published online: 12 April 2005

Abstract

The high-spin states of ⁹³Mo have been studied by a ⁸²Se( ¹⁶O, 5n) ⁹³Mo reaction at a beam energy of 100 MeV using techniques of in-beam γ-ray spectroscopy. Measurements of γ-t, γ-γ-t coincidences, γ-ray angular distributions and γ-ray linear polarizations were performed. The high-spin isomer was found as a (39/2^-) state at about 9.7 MeV. The near-yrast states in ⁹³Mo were interpreted using the weak-coupling picture of a d _5/2 neutron to a neutron magic core nucleus ⁹²Mo.