Systematics of fine structure in the α decay of deformed odd-mass nuclei

3rd International Workshop on "State of the Art in Nuclear Cluster Physics"

Ren, Zhongzhou^1,2,3,4 ; Ni, Dongdong^1,2

Department of Physics, Institute of Acoustics, Nanjing University, Nanjing

210093, China^1

Joint Center of Nuclear Science and Technology, Nanjing University, Nanjing

210093, China^2

Kavli Institute for Theoretical Physics China, Beijing

100190, China^3

Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou

730000, China^4

关键词: Barrier penetration;    Branching ratio;    Cluster models;    Fine structures;    Large deviations;    Multichannel;    Rotational band;    Shell structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/569/1/012039/pdf
DOI  :  10.1088/1742-6596/569/1/012039

来源: IOP

【 摘 要 】

We present a detailed analysis of the a-decay fine structure in 32 deformed odd-mass nuclei from Z 93 to Z 102. The α-decay half-lives are systematically calculated within the multichannel cluster model (MCCM), which turns out to well reproduce the experimental data and show the neutron deformed shell structure. The branching ratios for various daughter states are investigated in the MCCM and in the WKB barrier penetration approach, respectively. It is found that the MCCM results agree well with the experimental data, while the WKB results have relatively large deviations from the experimental data for the α transitions to the high-lying members of the rotational band.