脉冲极限下的强场分子电离：短脉冲冻结振动
Strong Field Molecular Ionization in the Impulsive Limit: Freezing Vibrations with Short Pulses
摘要：
我们研究了强场分子电离与脉冲宽度的关系。一些分子的光电子产率的实验测量揭示了不同的电离连续（阳离子状态），这强烈依赖于脉冲持续时间之间的竞争。令人惊讶的是，在短脉冲持续时间的限制，我们发现，一个单一的离子连续占主导地位的产量，而多个连续产生较长的脉冲。利用振动动力学的计算，我们解释我们的结果在电离过程中的核运动和非绝热动力学。
英文摘要：
We study strong-field molecular ionization as a function of pulse duration. Experimental measurements of the photoelectron yield for a number of molecules reveal competition between different ionization continua (cationic states) which depends strongly on pulse duration. Surprisingly, in the limit of short pulse duration, we find that a single ionic continuum dominates the yield, whereas multiple continua are produced for longer pulses. Using calculations which take vibrational dynamics into account, we interpret our results in terms of nuclear motion and non-adiabatic dynamics during the ionization process.
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