摘要
利用含时波包法研究了NaI分子在飞秒脉冲激光作用下的动力学演化情况.由于受非绝热效应的影响,波包运动到势能面的交叉区域时发生分裂.研究表明:非绝热效应引起的波包分裂是分子解离的根源,而且随着演化时间的增加非绝热效应变得越来越明显.同时,分别采用量子力学和经典力学理论探讨了NaI分子在非绝热过程中的演化规律以及解离概率随脉冲波长的变化关系.
We investigate the dynamic evolution of wave packet under the coupled diabatic potentials via employing the time-dependent wave packet approach.The wave packet splits in the crossing region due to the influence of non-adiabatic effects.In our studies,it is found that the non-adiabatic effects are very important to the dissociation of NaI molecule,and it becomes markedly with the increase of evolutionary time.Moreover,our study shows that the mean packet position 〈R（t）〉 and the classical trajectory R（t） are nearly coincident and the dissociation probability is dependent on the laser wavelength.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第12期595-600,共6页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10674083
10874102)资助的课题~~
关键词
非绝热效应
NaI分子
飞秒脉冲
含时波包
non-adiabatic effects
NaI molecule
femtosecond pulse
time-dependent wave packet
