Alpha-decay branching ratios to high-lying excited-states of the ~(242)Cm→~(238)Pu→~(234)U→~(230)Th→

• 作 者: 张进娟 许昌 任中洲
• 机 构: Department of Physics,Nanjing University,Department of Physics, Nanjing University,Center of Theoret
• 出 处: 中国物理C
• 发表日期: 2009年09期
• 关键词: branching Cm Pu Rn decay chain Th decay excited daughter nuclei lying

We present a systematic calculation on the α-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.

We present a systematic calculation on the α-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 proper 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.