Abstract
We report the total integrated cross section (TICS) of two-photon double ionization of helium in the photon energy range from 42 to 50 eV. Our computational procedure relies on a numerical solution of the time-dependent Schrödinger equation on a square-integrable basis and subsequent projection of this solution on a set of final field-free states describing correlation in the two-electron continuum. Our results suggest that the TICS grows monotonically as a function of photon energy in the region of 42-50 eV, possibly reaching a maximum in the vicinity of 50 eV. We also present fully resolved triple-differential cross sections for selected photon energies.
Original language | English |
---|---|
Article number | 033411 |
Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
Volume | 75 |
Issue number | 3 |
DOIs | |
Publication status | Published - 23 Mar 2007 |