Generalized oscillator strengths for X- B transitions in the hydrogen molecule

Abstract

Generalized oscillator strengths were computed for high-energy electron scattering by H 2, HD, and D 2. Wave functions expanded in explicitly correlated Gaussian functions were used to describe electronic states. The integration over the internuclear separation was performed with accurate vibrational wave functions. Transitions from the v = 0 vibrational level in the electronic ground state ( X 1 Σ g +) to various vibrational levels (0 ⩽ v ⩽ 38, 41, and 53 for H 2, HD, and D 2, respectively) in the electronic B 1 Σ u + state were considered. The calculations were performed for 76 values of the momentum transfer K in the range 0.0001 ⩽ K ⩽ 20.0 (a.u.).