Abstract
Dissociative attachment of electrons on the various rovibrational levels of the HCl and DCl molecules is studied in the 0-1 eV collision energy range. The interaction between the electron and the neutral molecule is described in an effective range theory which explicitly includes the long-range polarisation forces and represents the short-range forces by a boundary condition. This allows for an exact treatment of the electron-vibrational motion interaction in the course of the collision. The collision equations are solved for the associative detachment process and the dissociative attachment process is obtained through the detailed balance principle. The non-adiabatic effects are taken into account, they are responsible for the dissociative attachment process which does not imply an intermediate resonant state. The R dependence of the boundary condition is adjusted in order to reproduce the available experimental data on vibrational excitation and dissociative attachment on thermal molecules as given by Rohr and Linder (1976) and Allan and Wong (1981).