Li_2分子含时波包动力学的理论研究  

Theoretical investigation of the time-dependent wave packet dynamics of Li_2 molecule

作　　者：刘玉芳[1] 刘瑞琼[1] 丁俊霞[1] 

机构地区：[1]河南师范大学物理与信息工程学院,新乡453007

出　　处：《原子与分子物理学报》2009年第3期409-412,共4页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金(10574039);教育部科学技术研究重点项目(206084);省杰出青年计划(084100510011);省高校杰出科研人才创新工程项目(2006KYCX002).

摘　　要：利用含时量子波包方法计算得到了Li_2分子的光电子能谱,并运用波包动力学理论对含有不同参量的光电子能谱现象给出了合理的解释.通过分析文中的直观图像,研究了波包的动力学过程.结果表明,泵浦-探测脉冲的延迟时间对光电子能谱的形状有重要的影响;在较短延迟时间下,能谱独特的四峰现象是由光诱导势的产生引起的.Time-dependent quantum wave packet method is performed to calculate the time-resolved photoelectron spectra (TRPES) of the Li_2 molecule. The phenomena of PES corresponding to different parameters are interpreted reasonably by using wave packet dynamics theory. By analyzing intuitional images presented in this work, the dynamical process of wave packet is investigated. The investigation shows that the pump-probe delay time of laser pulses has significant influence on the shap of photoelectron spectrum. It also shows that the particular phenomenon of TRPES with four peaks at short delay time is induced by the appearance of light-induced potential (LIP).

关 键 词：含时波包 光电子能谱 泵浦-探测 

分 类 号：O433.59[机械工程—光学工程] O434.14[理学—光学]