Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations

doi:10.1088/1674-1056/19/2/023201

Abstract This paper uses the classical ensemble method to study the double ionization of a 2-dimensional (2D) model helium atom interacting with an elliptically polarized laser pulse. The classical ensemble calculation demonstrates that the ratio of double to single ionization decreases with the increasing ellipticity of the driving field. The classical scenario shows that there are hardly any e--e recollisions with the circularly polarized laser pulse. The double ionization probability is studied for linearly and circularly polarized laser pulses. The classical numerical results are consistent with the semiclassical rescattering mechanism and in agreement with the experimental results and the quantum calculations qualitatively.

Keywords: classical ensemble method nonsequential double ionization ellipticity dependence

Received: 28 December 2008
Revised: 09 March 2009
Accepted manuscript online:

PACS:	32.80.Fb	(Photoionization of atoms and ions)
	31.15.-p	(Calculations and mathematical techniques in atomic and molecular physics)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10974068 and 10574057).

Cite this article:

Yu Wei-Wei(于伟威),Guo Jing(郭静), and Liu Xue-Shen(刘学深) Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations 2010 Chin. Phys. B 19 023201

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Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations

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