超短强激光脉冲与H2＋相互作用研究：经典与量子计算的比较

用经典动力学和量子力学方法分别研究了Ｈ２＋在超短强激光场中的电离、离解和残存行为，得到了相似的结果：即在超短强激光脉冲作用下，Ｈ２＋的电离占优，但有限的量子计算低估了Ｈ２＋的离解几率；而经典处理则没有显示Ｈ２＋在超强场中的稳定化。另外，经典计算表明当核间距Ｒ伸展到一定范围时，Ｈ２＋的电离率最大。这符合量子计算中发现的电荷谐振增强电离（ＣＲＥＩ）现象。

Investigation of Ultrashort Intense Laser Pulses Interactions with H+2: Comparison of Classical and Quantum Calculations

We have investigated the ionization and dissociation behavior of H+2 in ultrashort intense laser pulses with classical dynamics and quantum mechanics methods respectively. The similar results are obtained, that is, the ionization dominates the decay mechanism of H+2 under the irradiation of ultrashort intense laser pulses. However, the limited quantum calculations understimate the dissociation probability; The classical results do not demonstrate the stabilization effect of H+2 in superstrong laser pulses. In addition, the classical calculations indicate that the ionization rate attains a maximum when the internuclear separation R extends to a critical rang. This agrees well with the charge-resonance enhanced ionization effect which is found by quantum calculations.