Abstract

Inelastic low-energy electron collisions with hydrogen halides HCl, HBr, DBr and HI are studied theoretically on the basis of the nonlocal resonance model of Domcke and Mündel. The model takes account of the dependence of the dipole-modified threshold exponent on the internuclear distance and of the precise form of the long-range part of the negative ion potential. Cross sections for vibrational excitation, dissociative attachment and associative detachment have been calculated. For all three collision processes, the cross sections calculated are in better agreement with experiment than previous calculations.

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