On the mechanism of signature inversion in the yrast band of 84Rb | Zendy

Shen ShuiFa | Zendy; SHI SHUANG-HUI | Zendy; Gu JiaHui | Zendy; Liu Jing-yi | Zendy; Shen Wen-Qing | Zendy

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On the mechanism of signature inversion in the yrast band of 84Rb

Author(s) -

Shen ShuiFa,

SHI SHUANG-HUI,

Gu JiaHui,

Liu Jing-yi,

Shen Wen-Qing

Publication year - 2003

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.52.48

Subject(s) - yrast , spins , physics , quadrupole , parity (physics) , oblate spheroid , angular momentum , nucleus , atomic physics , signature (topology) , condensed matter physics , quantum mechanics , geometry , excited state , mathematics , microbiology and biotechnology , biology

The angular momentum projected shell model(PSM) is applied to the nucleus 84Rb. The results of theoretical calculations about the positiveparity yrast band with configuration πg9/2νg9/2 and the negativeparity yrast band with configuration π(p3/2,f5/2)νg9/2 are comparedwith experimental data;especially,the mechanism of signature inversion in the positiveparity yrast band is discussed.The interpretation within the PSM shows that this signature pattern is a signal of a substantial quadrupole shape change with increasing spin,where the nucleus evolves from a prolate shape at low spins through a triaxial shape to an oblate shape at high spins.In addition,the nuclear shape for these two bands are also specified.

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