Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations |
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Authors: | Yu Wei-Wei Guo Jing and Liu Xue-Shen |
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Institution: | Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China |
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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. |
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Keywords: | classical ensemble method nonsequential double ionization ellipticity dependence |
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