Double ionization of helium with classical ensemble simulations

被引：6

作者：

Guo, Jing ^{[1
]}

Yu, Wei-Wei ^{[1
]}

Liu, Xue-Shen ^{[1
]}

机构：

[1] Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Peoples R China

来源：

PHYSICS LETTERS A | 2008年 / 372卷 / 36期

基金：

中国国家自然科学基金;

关键词：

non-sequential double ionization; wavelength dependence; pulse duration dependence;

D O I：

10.1016/j.physleta.2008.07.012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The classical ensemble method is used to study the dynamic process of the ID helium interacting with intense laser pulses. Probabilities of double-ionization of helium in intense laser fields are calculated by the symplectic method. The wavelength dependence of double ionization in He is investigated. The non-sequential double ionization (NSDI) is observed in classical simulations at the laser wavelength of 532 nm, 780 nm and 1024 nm, respectively, while the sequential double ionization (SDI) is the dominant process at the laser wavelength of 248 nm. The pulse duration dependence on NSDI is also studied and the result is in agreement with the corresponding experimental results qualitatively. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：5799 / 5803

页数：5

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