强激光场中He双电离双通道的波长依赖性

Journal of Atomic and Molecular Sciences Pub Date : 2017-07-01 DOI:10.4208/jams.042117.061417a

Chan Li, X. Hao, Weidong Li, Zheng Shu, J. Chen

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引用次数: 0

摘要

本文基于强场多体s矩阵理论，研究了He在强激光场中振荡(SO)和相关能量共享(CES)通道中的双电离过程。对这两种通道电离速率的波长依赖性进行了分析和比较。根据我们的计算，CES通道在长波(300-780nm)占主导地位，而SO通道在短波(20-200nm)占主导地位。更有趣的事情发生在中间波长范围(200-300nm)，其中来自SO和CES通道的贡献是可比的，并且可能相互竞争。

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Wavelength dependence of the Two Channels for Double Ionization of He in Intense Laser Field

In this paper, we investigate the double ionization process of He for the shakeoff (SO) and correlated energy-sharing (CES) channels in intense laser field based on the intense-field many body S-matrix theory (IMST). The wavelength dependence of the ionization rate from these two channels are analyzed and compared with each other. According to our calculation, the CES channel dominants at long wavelengths (300-780nm), while the SO channel dominants at short wavelengths (20-200nm). The more interesting thing occurs in the intermediate wavelength regime (200-300nm) where the contributions from the SO and CES channels are comparable and may compete with each other.

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Journal of Atomic and Molecular Sciences PHYSICS, ATOMIC, MOLECULAR & CHEMICAL-

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