氢硼聚变三体级联衰变连续能谱的Monte-Carlo模拟与分析  

Monte-Carlo Simulation and Analysis of the Spectrum of p+ ^( 11)B Three-Body Sequential Decay

作　　者：李成波[1] 袁坚[1] 林尔康 张培华 孟秋英[1] 

机构地区：[1]中国原子能科学研究院,北京102413 [2]中研院物理所,台北11529 [3]中国科技大学研究生院,北京100039

出　　处：《高能物理与核物理》2002年第12期1223-1227,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 (1 9875 0 80 )资助~~

摘　　要：11 B(p ,α1 ) 8Be (1 ) ( 2α)三体级联衰变中居间核8Be(1 ) 衰变成两个α粒子的连续能谱呈马鞍形分布 .编写了模拟三体级联衰变连续能谱的Monte Carlo程序 ,计算结果表明 :沿居间核8Be(1 ) 运动方向α发射强度增强的各向异性分布 ,能较好地解释实验结果 ,揭示p + 1 1 B核反应中8Be(1 ) 核α衰变各向异性发射 .The new experimental data of 11B(p,α 1)8Be *(1)(2α) three-body decay show that the continuous α spectrum of the two alpha particles produced by the intermediate nuclear 8Be *(1) looks like a saddle type distribution. To explain the experimental facts, we have written a Monte Carlo simulation program to the p+ 11B reaction. The calculation results of the program indicate that the anisotropy distribution emission of the decay alpha particles produced by 8Be *(1) can give a satisfying explanation to the experimental spectrum. =

关 键 词：氢硼聚变 三体级联衰变 连续能谱 MONTE-CARLO模拟 各向异性分布 热核反应 

分 类 号：O571.32[理学—粒子物理与原子核物理]