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静电场对强激光场非序列双电子电离的影响
  • 期刊名称：物理学报
  • 时间：0
  • 页码：666-672
  • 语言：中文
  • 分类：O461.1[理学—电子物理学;理学—物理]
  • 作者机构：[1]北京大学物理学院人工微结构和介观物理国家重点实验室,北京100871, [2]中国科学院物理研究所光物理实验室,北京100080, [3]应用物理与计算数学研究所非线性研究中心,北京100088
  • 相关基金：基金项目：国家自然科学基金（批准号：60478031,10634020和10521002）及国家重点基础研究发展计划（批准号：2006CB806000,2006CB806007）资助的课题.
  • 相关项目：飞秒光物理与介观光学研究
作者： 王兵兵|傅盘铭|刘杰|龚旗煌|李洪云|蒋红兵|陈京|李晓峰|
关键词： 非序列双电离, 静电场, 重碰, 非对称性场, nonsequential double ionization, static electric field, rescattering, asymmetric field
中文摘要：

利用半经典重碰模型计算并研究了He原子在强激光场与静电场的混合场下的非序列双电子电离过程，由于静电场破坏了激光场电场的反演对称性，在平行于激光场偏振方向的He^2＋离子动量分布不再具有对称双峰结构，由于超短脉冲具有相似的非对称性，研究静电场对原子在强场中非序列电离的影响，有助于分析超短脉冲非序列电离的过程，进一步了解非序列双电子电离的机理。

英文摘要：

Nonsequential double ionization of He atom in the combined field of a laser and a static electric field has been investigated. It is found that the presence of the static electric field breaks the inversion and reflection symmetry, the symmetric double-peak structure of the He^2＋ ion momentum parallel to the polarization of the laser field is broken. Since the ultrashort laser pulse has the similar asymmetric character, this study is helpful to understand the mechanism of the double ionization process in ultrashort laser field.

同期刊论文项目
飞秒光物理与介观光学研究
期刊论文 123 会议论文 7
强飞秒激光在介质中的非线性传输
期刊论文 60 会议论文 23
原子在强激光场中的相对论效应及重碰引起的强场效应
期刊论文 11 会议论文 4
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