Photoelectron angular distributions from above threshold ionization of hydrogen atoms in strong laser fields

被引：27

作者：

Bai, Lihua

Zhang, Jingtao

Xu, Zhizhan ^{[1
]}

Guo, Dong-Sheng

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

[2] So Univ & A&M Coll, Baton Rouge, LA 70813 USA

[3] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.97.193002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We apply a scattering theory of nonperturbative quantum electrodynamics to study the photoelectron angular distributions (PADs) of a hydrogen atom irradiated by linearly polarized laser light. The calculated PADs show main lobes and jetlike structure. Previous experimental studies reveal that in a set of above-threshold-ionization peaks when the absorbed-photon number increases by one, the jet number also increases by one. Our study confirms this experimental observation. Our calculations further predict that in some cases three more jets may appear with just one-more-photon absorption. With consideration of laser-frequency change, one less jet may also appear with one-more-photon absorption. The jetlike structure of PADs is due to the maxima of generalized phased Bessel functions, not an indication of the quantum number of photoelectron angular momentum states.

引用

页数：4

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