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Theoretical study on the favored alpha-decay half-lives of deformed nuclei

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Chinese Physics C 2021年第12期45卷 140-146页

作者： M.Hassanzad O.N.Ghodsi Department of Physics Faculty of Basic SciencesUniversity of MazandaranP.O.Box 47416-416BabolsarIran

A systematic study on the a-decay half-lives of nuclei in the range 93≤Z≤118 is performed by employing various versions of proximity *** obtain more reliable results,deformation terms are included up to hexadecapole(β_(4))in the spherical-deformed nuclear and Coulomb interaction ***,the favored a-de-cay processes in this region are categorized as even-even,odd A,and odd-odd ***,they are grouped into two transitions:ground state to ground state and ground state to isomeric *** to the comparison of their root-mean-square deviations(RMSD's),Bassll and Ngo80 have the lowest values and better reproduce experimental ***,by considering preformation probability within the cluster formation model,the results validate the significant reduction in root-mean-square deviations obtained for different versions of ***,the deviation between the calculated and experimental data is detracted.

关键词： alpha-decay deformation proximity potential isomeric state ground state

Rotational structure of the odd-proton nuclide ^(171)Tm:A projected shell model study

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Science China(Physics,Mechanics & Astronomy) 2015年第5期58卷 76-81页

作者： LIU YanXin CHEN FangQi YU ShaoYing SUN Yang School of Science Huzhou University China Institute of Atomic Energy Department of Physics and Astronomy Shanghai Jiao Tong University

Deformed odd-mass nuclei are ideal examples where the interplay between single-particle and collective degrees of freedom can be studied. Inspired by the recent experimental high-spin data in the odd-proton nuclide 171 Tm, we perform projected shell model(PSM) calculations to investigate structure of the ground band and other bands based on isomeric states. In addi- tion to the usual quadrupole-quadrupole force in the Hamiltonian, we employ the hexadecapole-hexadecapole(HH) interac- tion, in a self-consistent way with the hexadecapole deformation of the deformed basis. It is found that the known experi- mental data can be well described by the PSM calculation. The effect of the HH force on the quasiparticle isomeric states is discussed.

关键词： rotational band isomeric state hexadecapole-hexadecapole interaction projected shell model

Identification of a 9/2^-[505] isomer in the neutron-rich ^(193)Os nucleus

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Chinese Physics C 2014年第6期38卷 30-34页

作者：高丙水周小红方永得张玉虎柳敏良王思成王建国马飞郭应祥吴晓光贺创业郑云王治民颜鑫亮王志刚方芳 Institute of Modern Physics Chinese Academy of Sciences University of Chinese Academy of Sciences School of Nuclear Science and Technology Lanzhou University China Institute of Atomic Energy

The neutron rich nucleus 193Os was produced in the 192Os（TLi, 6Li）193Os reaction. An isomeric state based on the 9/2-[505] Nilsson orbital was identified in the present work. The half-life of the isomeric state was extracted and discussed in terms of the K quantum number. A level scheme built on the isomeric state was proposed based on the experimental data.

关键词： high-spin state isomeric state K-forbidden hindrance factor