速度分群情况下氘氚热核反应率的模拟与分析

Simulation and Analysis of Deuterium-Tritium Thermonuclear Reaction Rate in Velocity Groups

研究两种原子核粒子参与反应的热核聚变,假定一种原子核粒子处于热动平衡状态,对另一种原子核粒子速度分布进行分群,推导分群热核反应率以及平均热核反应率,编制相应计算程序;以氘氚热核聚变反应为例计算分群热核反应率和相应的平均热核反应率,并与直接积分结果进行对比;同时,细致研究平均热核反应率与速度分群数目的关系.

Thermonuclear reaction rate describing thermonuclear burning efficiency in thermonuclear fusion is studied.As one species atomic nucleus with Maxwell velocity distribution,another species atomic nucleus velocity is divided into several groups.Velocity group thermonuclear reaction rate and averaged thermonuclear reaction rate are deduced,and simulation codes are obtained.Taking deuterium-tritium thermonuclear fusion reaction as an example,velocity group thermonuclear reaction rates and corresponding averaged thermonuclear reaction rates are calculated and analyzed comparing with exact direct integration results.Finally,relation between averaged thermonuclear reaction rate and velocity group number is studied.