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

作　　者：张进娟 许昌 任中洲 

机构地区：[1]Department of Physics,Nanjing University [2]Department of Physics, Nanjing University [3]Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou

出　　处：《Chinese Physics C》2009年第9期764-768,共5页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10535010, 10805026, 10775068, 10735010);Major State Basic Research Development Program (2007CB815004);Doctoral Fund of Ministry of Education of China (20070284016)

摘　　要：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 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.

关 键 词：ALPHA-DECAY branching ratios high-lying excited states PARITY 

分 类 号：O571.321[理学—粒子物理与原子核物理]