Characteristic Spectrum of Very Low-Energy Photoelectron from Above-Threshold Ionization in the Tunneling Regime

被引：119
|
作者：
Wu, C. Y. [1 ]
Yang, Y. D. [1 ]
Liu, Y. Q. [1 ]
Gong, Q. H. [1 ]
Wu, M. [2 ]
Liu, X. [2 ]
Hao, X. L. [3 ,4 ]
Li, W. D. [3 ,4 ]
He, X. T. [5 ,6 ]
Chen, J. [5 ,6 ]
机构：
[1] Peking Univ, Dept Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
[2] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, 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, Beijing 100088, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 04期
关键词：
FIELD IONIZATION; ATOMS; HARMONICS; ELECTRONS; PLATEAU;
D O I：
10.1103/PhysRevLett.109.043001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report an experimental and theoretical study of very low-energy photoelectrons in tunneling ionization process from noble gas atoms interacting with ultrashort intense infrared laser pulses. A universal peak structure with electron energy well below 1 eV in the photoelectron spectrum, corresponding to the double-hump structure in the longitudinal momentum distribution, is identified experimentally for all atomic species. Our quantum and semiclassical analysis reveal the role of long-range Coulomb potential in the production of this very low-energy peak structure.
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页数：5
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