Alpha-decay branching ratios to high-lying excited-states of the 242Cm→238pu→ 234U →230Th→226Rn decay chain

中国物理C, 2009, 33(9): 764-768.

^1, , ^2, , ^3,

1.Department of Physics, Nanjing University, Nanjing 210008, China

2.Department of Physics, Nanjing University, Nanjing 210008, China

3.Department of Physics, Nanjing University, Nanjing 210008, China;Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China

基金项目: 国家重点基础研究发展规划(973计划)(2007CB815004) 教育部博士基金(20070284016) 国家自然科学基金(10535010,10805026,10775068,10735010)

Alpha-decay branching ratios to high-lying excited-states of the 242Cm→238pu→ 234U →230Th→226Rn decay chain

ZHANG Jin-Juan ^1, , XU Chang ^2, , REN Zhong-Zhou ^3,

1.Department of Physics, Nanjing University, Nanjing 210008, China

2.Department of Physics, Nanjing University, Nanjing 210008, China

3.Department of Physics, Nanjing University, Nanjing 210008, China;Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China

Keywords： alpha-decay

We present a systematic calculation on the 0c-decay branching ratios to excited-states of an even-even α-decay chain 242Cm→238pu→234U →230Th→226Rn by the improved barrier penetration approach. The changes of the parities between the parent nuclei and the daughter nuclei are properly taken into account. The theoretical values are compared with the available experimental data and the deviation between them is within a factor of 5 in most cases.

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Alpha-decay branching ratios to high-lying excited-states of the 242Cm→238pu→ 234U →230Th→226Rn decay chain

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