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

Yu Ben-Hai; Li Ying-Bin; Tang Qing-Bin

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

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Using a classical ensemble model,we investigate the correlation behaviour of electrons originating from nonsequential double ionization (NSDI) of argon atoms by the elliptically polarized laser pulses.Because of the ellipticity,not only the first electron to return but also the later return of tunneled electrons contribute significantly to NSDI.We mainly discuss two kinds of events of NSDI originating from the first and the second return separately.For the NSDI resulting from the recollision of the first return,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 return,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.

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《中国物理：英文版》 |2013年第1期|191-196|共6页
作者
Yu Ben-Hai; Li Ying-Bin; Tang Qing-Bin;
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College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China;

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

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

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

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