Properties of the rotational bands in the transitional nucleus {sup 189}Pt

Journal Article · Tue Sep 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.034303· OSTI ID:21293814

Hua, W; Zhou, X H; Zhang, Y H; Zheng, Y; Liu, M L; Ma, F; Guo, S; Ma, L; Wang, S T; Zhang, N T; Fang, Y D; Lei, X G; Guo, Y X; Oshima, M; Toh, Y; Koizumi, M; Hatsukawa, Y; Qi, B; Zhang, S Q; Meng, J ^[1]

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1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China) and Graduate School of the Chinese Academy of Sciences, Beijing 100049 (China)

High-spin states in {sup 189}Pt have been studied experimentally using the {sup 176}Yb({sup 18}O,5n) reaction at beam energies of 88 and 95 MeV. The level scheme of {sup 189}Pt has been revised significantly and extended to high-spin states. Rotational bands have been analyzed in the framework of triaxial particle-rotor model, and a {gamma}{approx_equal}-30 deg. triaxial shape and a near-prolate shape have been proposed to the {nu}i{sub 13/2}{sup -1} and {nu}f{sub 5/2}(p{sub 3/2}) bands, respectively. Two {delta}I=2 transition sequences with similar energies have been observed, and they have been proposed to be associated with the {nu}i{sub 13/2}{sup -2}{nu}f{sub 5/2}(p{sub 3/2}) configuration. The structure built on the {nu}i{sub 13/2}{sup -2}{nu}f{sub 5/2}(p{sub 3/2}) configuration could be interpreted as a pair of pseudospin partners. The level energies in the pseudospin partner bands are well reproduced by the theoretical calculations of the triaxial particle-rotor model if a near-oblate shape is assumed.

• OSTI ID: 21293814
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BEAMS
CONFIGURATION
HIGH SPIN STATES
MEV RANGE 10-100
NEUTRON EMISSION
OXYGEN 18
PARTICLE-CORE COUPLING MODEL
PLATINUM 189
ROTATIONAL STATES
YTTERBIUM 176 TARGET