电子与D_2分子的相关量子动力学的理论研究

Theoretical study of correlation quantum dynamics between an electron and the D_2^+ molecule

文章利用含时波包方法,通过求解三维电子与核运动相关的薛定谔方程得到了D+离子的动能分布,同时电子被电离后多次返回与D2+离子发生碰撞的几率也得到了计算,并发现D+离子主要来源于电子与D2+离子在各个波长第一个光周期内的第一次碰撞.我们的计算结果不但与实验符合较好,而且给出了在阿秒时间分辨率下追踪电子与核相关运动的量子动力学方法.

A three dimensional （3D） time-dependent wave-packet method has been used to solve the Schroedinger equation of an electron coupled with the nucleus. The re-collision probabilities between the electron and the D2^＋ have been derived, and we find that most D2^＋ ions come from the first re-collision between the electron and its parent ion D2^＋ in the first optical period. Our calculation is in good agreement with experimental results. The quantum dynamics method to track the motion of both electron and nuclear wave packets with attosecond resolution is described.