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Ionization cross sections for the hydrogen molecule have been calculated by applying the classical Gryzinski theory combined with the Franck–Condon theory. It is shown that—if the reaction channels, Franck–Condon factors and Franck–Condon densities are taken into account properly—the calculated cross sections for ionization of the molecular ground state X1Σg+(v′=0) are in almost perfect agreement...
Using two different TDDFT methods, we study the role of electronically excited states and two-electron dynamics in high harmonic generation (HHG) of H 2 . The two methods produce slightly different electronic structures as reflected in the calculated ionization potentials. They nevertheless give similar HHG spectra. The difference between the two methods increases with the laser intensity,...
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