摘要
研究了形变效应对 1 0 6MeV/u84Kr+ 2 7Al反应中断前粒子发射的影响 .发现通过测量的裂变前粒子多重性提取的裂变延迟时间将因此从 2 0× 1 0 - 2 1s减少到 5× 1 0 - 2 1s,表明增强的断前粒子发射有一部分来自形变效应的贡献 .
Effect of deformation on prescission particle emission was studied. The fission delay time extracted from the measured prescission light charged particle multiplicity of fission of light system 111 In, produced in 10.6MeV/u 84 Kr+ 27 Al collision, is reduced to 5×10 -21 s from 20×10 -21 s, if including deformation effect, which indicates that part of the excess of prescission particle emission comes from the deformation effect contribution. The reason is that deformation of the system leads to a decrease of the barriers for proton and α particle emission even larger than the increase of their binding energies.
出处
《高能物理与核物理》
CSCD
北大核心
2000年第10期945-948,共4页
High Energy Physics and Nuclear Physics
基金
东南大学基金资助!( 92 0 70 2 2 0 2 4 )&&
关键词
裂变延迟时间
形变
轻系统
断前粒子发射
fission delay time, deformation, light system, particle multiplicity
