S L Haan et al 2009 J. Phys. B: At. Mol. Opt. Phys. 42 134009 doi:10.1088/0953-4075/42/13/134009
S L Haan, Z S Smith, K N Shomsky and P W Plantinga
Show affiliationsLongitudinal momentum spectra and electron drift directions are considered for several laser wavelengths in non-sequential double ionization of helium using three-dimensional classical ensembles. In this model, the familiar doublet for wavelength 800 nm and intensities of order 5 × 1014 W cm−2 becomes a triplet for wavelength 1314 nm, then a doublet for 2017 nm. The results are explained based on whether the post-ionization impulse from the laser results in backward drift for one or both electrons.
Issue 13 (14 July 2009)
Received 30 December 2008, in final form 15 March 2009
Published 12 June 2009
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