核碎片激励下He－Ne－H_2激光体系的理论计算

THE THEORETICAL CALCULATIONS OF HE-NE-H_2 LASER SYSTEM EXCITED BY NUCLEAR FRAGMENTS

本文较系统地收集了Ｈｅ－Ｎｅ－Ｈ＿２激光体系存在的各种碰撞反应，跃迁等速率常数共１２６个，应用原子分子反应的微观过程原理对反应产物作了判定，并对核反应与低温等离子体化学反应进行计算模拟，跟踪了核碎片激励条件下Ｎｅ的５８５．２ｎｍ谱线粒子数反转随时间的变化。得出实现Ｎｅ的５８５．２ｎｍ粒子数反转最优的Ｈｅ：Ｎｅ：Ｈ＿２是１０：１：０．０７５；最宜的总压是１．２～４．１ａｔｍ；同时还分析讨论了Ｎｅ的６３２．８ｎｍ，１．１５２ｕｍ两条谱线粒子数反转的问题。

The He-Ne-H_2 laser system excited by nuclear fragments has been the subject of much experimental and theoretical studies in recent years,because of the instructive expectation by the so-calledmicroscopic process principle,A set of 35 independent atomic, molecular and nuclear reactions derived from 126 of possible reaction equations have been resolved by Runge- Kutta method,fromwhich it is believed that the optimum ratio should be He:Ne:H_2=10:1:0.075 and optimum pressure 1.1-4.2 atm for lasing at 5852A。