The effect of the Pauli exclusion principle on double ionization of He
atoms by strong, linearly polarized laser pulses is analyzed. We show
that correlated electron escape, with electron momenta symmetric with
respect to the field polarization axis, is suppressed if atoms are
initially prepared in the metastable state (3)S. The effect is a
consequence of selection rules for the transition to the appropriate
outgoing two-electron states. We illustrate the suppression in numerical
calculations of electron and ion momentum distributions within a reduced
dimensionality model
affiliation:
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego