Dissociative Autoionization in (1 + 2)-photon above Threshold Excitation of H2 Molecules
نویسنده
چکیده
We have theoretically studied the effect of dissociative autoionization on the photoelectron energy spectrum in (1+2)-photon above threshold ionization (ATI) of H2 molecules. We have considered excitation from the ground XΣg (v = 0, j) state to the doubly excited autoionizing states of Σu and Πu symmetry, via the intermediate resonantBΣu (v = 5, j) states. We have shown that the photoelectron energy spectrum is oscillatory in nature and shows three distinct peaks above the photoelectron energy 0.7 ev. This feature has been observed in a recent experiment by Rottke et. al., J. Phys. B 30, 4049(1997). * Electronic address : [email protected] 1
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