Predissociation of the ions HBr+and DBr+

Abstract
Potential energy curves for all HBr+ states which correlate with the first three dissociation limits are calculated employing the multi-reference configuration-interaction MRD-CI treatments in a Gaussian AO basis. Predissociation rates for the A2Σ+ vibrational levels in HBr+ and DBr+ due to spin-orbit interaction are calculated. The spin-orbit coupling elements are evaluated explicitly by using the Breit-Pauli operator and the MRD-CI wavefunctions.