C. Szymanowski et al., Role of the correlation charge in the double ionization of two-electron model atoms exposed to intense laser fields - art. no. 055401, PHYS REV A, 6105(5), 2000, pp. 5401
We investigate the influence of electron correlation in the double ionizati
on of a two-electron model atom exposed to an intense laser field. Using th
e freedom of our model system, we vary in a systematic way the correlation
strength between the two electrons. For the case of five-photon ionization,
while adjusting the laser frequency according to the correlation charge, w
e investigate extreme situations of strong and weak two-electron interactio
n regimes. We monitor the single and double ionization yield and study the
variation of the nonsequential ionization.