Semi-classical methods in non-sequential double ionization

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Journal titleChinese journal of physics
Pages329339; # of pages: 11
AbstractNon-sequential double ionization of an atom in an intense lasereld is a prototypical problem in multi-body strong eld interactions. To examine non-sequential double ionization, an often used approach is the semi-classical method, by which initial conditions are set according to quantum expressions and the ensuing dynamics modelled classically. Here we present a comparative study of quantum and semi-classical methods in the single active electron approximation. We show that semi-classical methods over-estimate the kinetic energy of rescattered electrons by up to 150%. We further show that the return time of the recolliding electrons deviates between quantum and semi-classical methods at low intensities, and that the deviation is attributable to the choice of the initial tunnelling position.
Publication date
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21276373
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Record identifier053d0e9e-1db0-452e-9f8b-60e7ff11a3fa
Record created2015-10-07
Record modified2016-05-09
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