Newly discovered candidate of the member of three-phonon multiplet in Se-76

作者：Chen Yong Bo^*; Shen Shui Fa; Xu Fu Rong; Zheng Shi Jie

来源：Chinese Physics C, 2007, 31(7): 642-646.

• three-phonon state
• total routhian surfaces (TRS) calculations
• vibrational band
• transition

The decay scheme of Br-76 is obtained by the Br-76 (T-1/2=16.2h) beta(+)/EC approach. And the 1791.31keV level, which was identified firstly by Muller et al by the Se-76 (p, p') approach several years ago, is reconfirmed. However, Muller et al did not point out the spin and parity of this level, and which phonon multiplet it should be belong to. Now we consider the assertion that this level is assigned as a new candidate of the three-phonon multiplet in 76 Se is reasonable. In addition, for researching deformation of Se-76 which lies in the transitional region of strong deformed and spherical nuclei, we calculate the total Routhian surfaces (TRS) of positive-parity states by cranking shell model formalism.

• 出版日期2007-7
• 单位北京大学; 东华理工大学