强激光场中H2^＋离解行为的研究

在多电子态模型下，利用二阶劈裂传播子算法计算了Ｈ２＾＋在强激光场中的离散行为。结果发现在高频场时分子的多光子离散碎片是近对称的，而对于低频场，在所考虑的激光强度下Ｈ２＾＋是被隧道离散的，因而其离散碎片Ｈ＾＋分布是反对称的，另外，文中还探讨了三脉冲形状对分子离解几率、离解碎片动力学行为的影响。

H + 2 Photodissociation Behavior in Intense Laser Field

In the multielectronic states model, the dissociative behavior of H + 2 in intense laser field is calculated with the two order split propagator algorithm. It shows that for high frequency laser pulse H + 2 is multiphoton dissociated under the considered laser intensity and the momentum distribution of dissociative fragment is nearly symmetric. But for lower frequency laser pulse the molecule field interaction is dominated by tunneling dissociation and the momentum distribution of fragment H + is asymmetric. In addition, the effects of the laser pulse shape on the dissociation probability and the dissociation dynamics of H + 2 are discussed.