Analysis of chaos-induced pulse trains in the ionization of hydrogen (14 pages)
Analysis of chaos-induced pulse trains in the ionization of hydrogen (14 pages)
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DOI：
10.1103/physreva.70.043407
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发表时间：
2004-10
影响因子：
2.9
通讯作者：
Kevin Mitchell;J. P. Handley;Brian P. Tighe;Abigail Acton Flower;J. Delos
中科院分区：
文献类型：
--
作者：
Kevin Mitchell;J. P. Handley;Brian P. Tighe;Abigail Acton Flower;J. Delos
我们研究激发（短激光脉冲）的氢原子在平行的电场和磁场，从一个初始的紧密结合的状态以上的经典电离阈值的状态。我们预言原子是通过发射一系列电子脉冲而电离的。这个预测是基于电子逃逸的经典动力学。特别是，脉冲串是由于经典的混沌，这发生在非零磁场。我们连接的结构的脉冲串的分形结构的逃逸动力学，并讨论了几个问题的实验兴趣，特别强调理解单个脉冲的分辨率。这项工作的简要说明出现在以前作为一封信[物理学。92，073001（2004）]。
We examine excitation (by a short laser pulse) of a hydrogen atom in parallel electric and magnetic fields, from an initial tightly bound state to a state above the classical ionization threshold. We predict that the atom ionizes by emitting a train of electron pulses. This prediction is based on the classical dynamics of electron escape. In particular, the pulse train is due to classical chaos, which occurs for nonvanishing magnetic field. We connect the structure of the pulse train to fractal structure in the escape dynamics, and discuss several issues of experimental interest, with a particular emphasis on understanding the resolution of individual pulses. A brief account of this work appeared previously as a Letter [Phys. Rev. Lett. 92, 073001 (2004)].