Statistical Multi-Fragmentation in Hot Compound Nuclei

• 来源期刊: 原子核物理：英文版
• 学科: 物理学
• 关键词: —Three-fold and four-fold fragmentation SCISSION time difference Yield ratio P₃2 BIAXIAL DEFORMATION TRIAXIAL DEFORMATION Space-time model
• 年，卷（期）: 1996,（4）
• 页码范围: 187-199
• 页数: 13页
• 分类号: O4

摘要

【正】 The first three-fold and four-fold fragmentation measurements in hot compound nuclei pro-duced in the reactions of a 25 MeV/u ⁴⁰At beam with targets of ²⁰⁹Bi,¹⁹⁷Au,¹⁵⁹Tb,¹¹⁵In,¹⁰³Rh,and⁹³Nb are presented.Various distributions are measured for these fragments,including distributions of ve-locities,relative velocities,angles,relative angles,masses,fragment mass ratios,total kinetic energies（TKE）,as well as the yield ratios of three-fold fragmentation to fission P₃₂ and the time difference △t be-tween two scissions after the formation of one compound nucleus.