The time-dependent close-coupling method is used to calculate fully differential cross sections for the two-photon double ionization of the He(1s21Se) ground state at a photon energy of 44 eV and the He(1s2s1 ,3Se) excited states at a photon energy of 34 eV. The total and triple-differential cross sections for the ground state are in good agreement with available calculations. We also used the time-dependent close-coupling method to calculate fully differential nuclear-recoil cross sections of He2 + for the two-photon double ionization of He in the ground and excited states at the same photon energies. The nuclear-recoil differential cross sections of He2+ for the ground state are in good agreement with the measurements recorded with a reaction microscope at the free-electron laser facility in Hamburg (FLASH).
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|State||Published - 28 Jun 2013|