Low-energy structure in the ionization of argon: Comparison of experiment with theory

doi:10.1088/1674-1056/22/2/023302

中国物理B ›› 2013, Vol. 22 ›› Issue (2): 23302-023302.doi: 10.1088/1674-1056/22/2/023302

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Low-energy structure in the ionization of argon: Comparison of experiment with theory

冯立强^a, 楚天舒^{a b}, 王利^a

a State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
b Institute for Computational Sciences and Engineering, Laboratory of New Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, China

收稿日期:2012-07-04 修回日期:2012-08-03 出版日期:2013-01-01 发布日期:2013-01-01
基金资助:
Project supported by the National Natural Science Foundations of China (Grant Nos. 10874096 and 20633070).

Low-energy structure in the ionization of argon: Comparison of experiment with theory

Feng Li-Qiang (冯立强)^a, Chu Tian-Shu (楚天舒)^{a b}, Wang Li (王利)^a

a State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
b Institute for Computational Sciences and Engineering, Laboratory of New Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, China

Received:2012-07-04 Revised:2012-08-03 Online:2013-01-01 Published:2013-01-01
Contact: Chu Tian-Shu, Wang Li E-mail:tschu@dicp.ac.cn; tschu008@163.com; liwangye@dicp.ac.cn
Supported by:
Project supported by the National Natural Science Foundations of China (Grant Nos. 10874096 and 20633070).

摘要/Abstract

摘要： The above-threshold ionization of argon in an intense 70-fs, 400-nm linearly polarized laser pulse has been investigated by the velocity map imaging techniques, combined with an attosecond-resolution quantum wave packet dynamics method. There is a quantitative agreement in all dominant features between the experiment and the theory. Moreover, a peak-splitting phenomenon in the first energy peak has been observed at high pulse intensity. Further, through the theoretical analysis, an ac Stark splitting with evident resonant and nonresonant ionization pathways has been found to be the physical reason for the experimental observations.

关键词: above threshold ionization, angular distribution, Stark splitting

Abstract: The above-threshold ionization of argon in an intense 70-fs, 400-nm linearly polarized laser pulse has been investigated by the velocity map imaging techniques, combined with an attosecond-resolution quantum wave packet dynamics method. There is a quantitative agreement in all dominant features between the experiment and the theory. Moreover, a peak-splitting phenomenon in the first energy peak has been observed at high pulse intensity. Further, through the theoretical analysis, an ac Stark splitting with evident resonant and nonresonant ionization pathways has been found to be the physical reason for the experimental observations.

Key words: above threshold ionization, angular distribution, Stark splitting

中图分类号: (Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))

33.80.Rv

33.60.+q (Photoelectron spectra )

冯立强, 楚天舒, 王利. Low-energy structure in the ionization of argon: Comparison of experiment with theory[J]. 中国物理B, 2013, 22(2): 23302-023302.

Feng Li-Qiang (冯立强), Chu Tian-Shu (楚天舒), Wang Li (王利). Low-energy structure in the ionization of argon: Comparison of experiment with theory[J]. Chin. Phys. B, 2013, 22(2): 23302-023302.

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Low-energy structure in the ionization of argon: Comparison of experiment with theory

Low-energy structure in the ionization of argon: Comparison of experiment with theory

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