强电场中氢负离子光剥离电子的波包演化

Evolution of Photodetached Electronic Wave Packet of H^- in High Electric Field

根据半经典的Herman-Kluk冻结高斯近似方法,研究了强电场中氢负离子光剥离电子波包随时间的演化问题,计算了波包的自关联函数.研究表明,电子波包的回归时间随外场增大而减小,在固定场下随波包的初动量增大而增大.数值计算结果显示,该方法是一种研究外场中电子波包演化的有效方法.

The evolution of the photodetached electronic wave packet of H- in high electric field was investigated by Herman-Kluk frozen Gaussian approximation method. And the autocorrelation function of the wave packet was calculated. It is found that the recurrent time of wave packet decreased when the field strength went up, and the recurrent time increased when the initial momentum increased in a fixed electric field. Numerical calculation showed that Herman-Kluk method is an effective approach for exploring wave packet evolution.