Investigation on the influence of atomic potentials on the above threshold ionization

We systematically investigate the influence of atomic potentials on the above-threshold ionization （ATI） spectra in one-dimensional （1D） cases and compare them with the three-dimensional （3D） case by numerically solving the time-dependent Schrrdinger equation. It is found that the direct ionization...

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Published inChinese physics B Vol. 23; no. 5; pp. 238 - 243
Main Author 田原野 李苏宇 魏珊珊 郭福明 曾思良 陈基根 杨玉军
Format Journal Article
LanguageEnglish
Published 01.05.2014
Subjects
ATI
Ionization
Lasers
Mathematical analysis
Mathematical models
Schroedinger equation
Spectra
Three dimensional
Thresholds
光谱
原子势
收益率
数值求解
时间依赖
阈上电离
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/23/5/053202

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Summary:We systematically investigate the influence of atomic potentials on the above-threshold ionization （ATI） spectra in one-dimensional （1D） cases and compare them with the three-dimensional （3D） case by numerically solving the time-dependent Schrrdinger equation. It is found that the direct ionization plateau and the rescattering plateau of the ATI spectrum in the 3D case can be well reproduced by the 1D ATI spectra calculated from the supersolid-core potential and the soft-core potential, respectively. By analyzing the factors that affect the yield of the ATI spectrum, we propose a modified-potential with which we can reproduce the overall 3D ATI spectrum. In addition, the influence of the incident laser intensities and frequencies on the ATI spectra calculated from the proposed modified potential is studied.
Bibliography:above threshold ionization, model potential, angular distribution of photoelectron
Tian Yuan-Ye, Li Su-Yu, Wei Shan-Shan, Guo Fu-Ming, Zeng Si-Liang, Chen Ji-Gen, Yang Yu-Jun（ 1.Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China ;2. Data Center for High Energy Density Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China c）science and Technology Computation Physics Laboratory, Institute of Applied Physics and Computational Mathematics, Belting 100088, China ;4.Department of Physics and Materials Engineering, Talzhou University, Taizhou 318000, China
We systematically investigate the influence of atomic potentials on the above-threshold ionization （ATI） spectra in one-dimensional （1D） cases and compare them with the three-dimensional （3D） case by numerically solving the time-dependent Schrrdinger equation. It is found that the direct ionization plateau and the rescattering plateau of the ATI spectrum in the 3D case can be well reproduced by the 1D ATI spectra calculated from the supersolid-core potential and the soft-core potential, respectively. By analyzing the factors that affect the yield of the ATI spectrum, we propose a modified-potential with which we can reproduce the overall 3D ATI spectrum. In addition, the influence of the incident laser intensities and frequencies on the ATI spectra calculated from the proposed modified potential is studied.
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/5/053202