摘要
运用Monte-Carlo轨迹法研究了Kr(1Sg)+HF(X1∑+;v=1,2,3;J=4)→Kr(1Sg)+HF(XI∑+,V’,J’)的碰撞过程,从而分析Kr原子对HF基频和泛频的影响。研究表明:在初始相对平动能Et≤251.0kJ/mol时,Kr原子能够减少产生基频的粒子数反转,增加产生泛频特别是V=2能级的粒子数反转,并且,Kr原子有较强的弛豫高转动态(J’≥4)的能力,因此,Kr原子对HF泛频激光在提高光强和增强大气传输能力方面均有较大的改善。
The collision reaction that Kr(~1S_g)+HF(X^1∑^+; v= 1, 2, 3, J=4) - Kr(Sg)+HF(X^1∑^+, v', J') has been studied using Monte--Carlo trajectory method,and it has been found that Kr atoms have influence on the fundamental and overtone vibrational frequency for HF(X^1∑^+). The studying results show that, when the initial relative translational energy E_t≤251.0 kJ/mol, Kr atoms can reduce the particle number reversion of the fundamental vibrational frequency, and increase it of the overtone vibrational frequency, particularly in the energy level v' =2, and Kr atoms are more strong on relaxing the higher rotational states(J'≥4). Thus, for hydrogen fluoride (HF) overtone frequency laser Kr atoms can obviously increase the strength of light and im- prove the transmission property in the air.
关键词
基频
泛频
粒子数反转
氟化氢
氪
碰撞
Monte-Carlo trajectory method, Fundamental vibrational frequency, Overtone vibrational frequency, Particle number reversion, Kr+HF