Electron correlations in nonsequential double ionization of argon atoms by elliptically polarized laser pulses

doi:10.1088/1674-1056/22/1/013206

Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (1): 13206-013206.doi: 10.1088/1674-1056/22/1/013206

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Electron correlations in nonsequential double ionization of argon atoms by elliptically polarized laser pulses

余本海, 李盈傧, 汤清彬

College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China

收稿日期:2012-05-04 修回日期:2012-06-21 出版日期:2012-12-01 发布日期:2012-12-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11005088 and 11047145), the Project of Basic and Advanced Technology of Henan Province, China (Grant Nos. 102300410241 and 112300410021), and the Scientific Research Foundation of Education Department of Henan Province, China (Grant No. 2011B140018).

Electron correlations in nonsequential double ionization of argon atoms by elliptically polarized laser pulses

Yu Ben-Hai (余本海), Li Ying-Bin (李盈傧), Tang Qing-Bin (汤清彬)

College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China

Received:2012-05-04 Revised:2012-06-21 Online:2012-12-01 Published:2012-12-01
Contact: Yu Ben-Hai E-mail:hnyubenhai@163.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11005088 and 11047145), the Project of Basic and Advanced Technology of Henan Province, China (Grant Nos. 102300410241 and 112300410021), and the Scientific Research Foundation of Education Department of Henan Province, China (Grant No. 2011B140018).

摘要/Abstract

摘要： Using a classical ensemble model, we investigate the correlation behaviour of the electrons originating from nonsequential double ionization (NSDI) of argon atoms by the elliptically polarized laser pulses. Because of the ellipticity, not only the first returning but also the latter returnings of tunneled electrons contribute significantly to NSDI. We mainly discuss two kinds of events of NSDI originating from the first and the second returnings separately. For the NSDI resulting from the recollision of the first returning, the correlated electron momentum spectrum along the long axis of the laser polarization plane reveals an obvious V-like shape, located at the first and third quadrant. However, for the NSDI resulting from the recollision of the second returning, the momenta of two electrons are distributed in the four quadrants uniformly. By analysing the trajectories of these two kinds, we find that the recollision energy and the laser phase at recollision are different for the first and second returning trajectories, which are responsible for the difference in the correlated behavior of the final electron momentum.

关键词: nonsequential double ionization, elliptically polarized laser pulse, recollision, electron correlation

Abstract: Using a classical ensemble model, we investigate the correlation behaviour of the electrons originating from nonsequential double ionization (NSDI) of argon atoms by the elliptically polarized laser pulses. Because of the ellipticity, not only the first returning but also the latter returnings of tunneled electrons contribute significantly to NSDI. We mainly discuss two kinds of events of NSDI originating from the first and the second returnings separately. For the NSDI resulting from the recollision of the first returning, the correlated electron momentum spectrum along the long axis of the laser polarization plane reveals an obvious V-like shape, located at the first and third quadrant. However, for the NSDI resulting from the recollision of the second returning, the momenta of two electrons are distributed in the four quadrants uniformly. By analysing the trajectories of these two kinds, we find that the recollision energy and the laser phase at recollision are different for the first and second returning trajectories, which are responsible for the difference in the correlated behavior of the final electron momentum.

Key words: nonsequential double ionization, elliptically polarized laser pulse, recollision, electron correlation

中图分类号: (Multiphoton ionization and excitation to highly excited states)

32.80.Rm

31.90.+s (Other topics in the theory of the electronic structure of atoms and molecules) 32.80.Fb (Photoionization of atoms and ions)

余本海, 李盈傧, 汤清彬. Electron correlations in nonsequential double ionization of argon atoms by elliptically polarized laser pulses[J]. Chin. Phys. B, 2013, 22(1): 13206-013206.

Yu Ben-Hai (余本海), Li Ying-Bin (李盈傧), Tang Qing-Bin (汤清彬). Electron correlations in nonsequential double ionization of argon atoms by elliptically polarized laser pulses[J]. Chin. Phys. B, 2013, 22(1): 13206-013206.

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Electron correlations in nonsequential double ionization of argon atoms by elliptically polarized laser pulses

Electron correlations in nonsequential double ionization of argon atoms by elliptically polarized laser pulses

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