Fivefold differential cross section of fast (e,2e) ionization of H-2, D-2,and T-2 by a Franck-Condon approach

The fivefold differential cross sections of the simple ionization of hydrog en, deuterium, and tritium diatomic molecules are determined by the use of one-center Coulomb continuum wave functions describing the slow ejected ele ctron. Vertical transitions from the lowest vibrational state of the fundam ental (1)Sigma(g) state of the target to the vibrational levels of the fund amental (2)Sigma(g) state of H-2(+), D-2(+), Or T-2(+) are considered. The results obtained for two different energy resolutions (1 and 3 eV) show tha t the difference between these three species should increase with a decreas e of the energy resolution. [S1050-2947(99)04410-8].