Wavelength scaling of atomic nonsequential double ionization in intense laser fields

被引：30

作者：

Wang, YanLan ^{[1
,2
]}

Xu, SongPo ^{[1
,2
]}

Chen, YongJu ^{[1
,2
]}

Kang, HuiPeng ^{[1
]}

Lai, XuanYang ^{[1
]}

Quan, Wei ^{[1
]}

Liu, XiaoJun ^{[1
]}

Hao, XiaoLei ^{[3
,4
]}

Li, WeiDong ^{[3
,4
]}

Hu, ShiLin ^{[5
,6
]}

Chen, Jing ^{[5
,6
]}

Becker, Wilhelm ^{[7
,8
]}

Chu, Wei ^{[9
]}

Yao, Jinping ^{[9
]}

Zeng, Bin ^{[9
]}

Cheng, Ya ^{[9
]}

Xu, ZhiZhan ^{[9
]}

机构：

[1] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Peoples R China

[4] Shanxi Univ, Dept Phys, Taiyuan 030006, Peoples R China

[5] Peking Univ, Ctr Appl Phys & Technol, HEDPS, Beijing 100084, Peoples R China

[6] Inst Appl Phys & Computat Math, POB 8009, Beijing 100088, Peoples R China

[7] Max Born Inst, D-12489 Berlin, Germany

[8] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia

[9] Chinese Acad Sci, State Key Lab High Field Laser Phys, Shanghai Inst Opt & Fine Mech, POB 800-211, Shanghai 201800, Peoples R China

来源：

PHYSICAL REVIEW A | 2017年 / 95卷 / 06期

关键词：

ABOVE-THRESHOLD-IONIZATION; SPECTRA;

D O I：

10.1103/PhysRevA.95.063415

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Experimental and theoretical investigations of the wavelength dependence of the nonsequential double ionization (NSDI) process of the xenon atom in intense laser fields are reported. The observed wavelength dependence of the ratio Xe2+/Xe+ deviates significantly from the prediction of the three-step model of ionization (sometimes called the "simple-man" model), both in the slope of the overall decrease with increasing wavelength and in the existence of some pronounced humps. A semiclassical model calculation reproduces the changing slope of the overall decrease, which is due to the interplay of wave-packet diffusion, Coulomb focusing, and a closely related Coulomb defocusing effect of the liberated electron. The hump is beyond the scope of the semiclassical model.

引用

页数：7

共 53 条

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