Abstract
A deperturbation of the interaction between the A 2Π and B 2Σ states in CaCl is presented. The results are used to determine the mixing coefficients in a 4p, 3d, 4f Ca+ orbital hybridization model for the low lying electronic states in CaCl. These mixing coefficients are used in the interaction calculation to predict the equilibrium energy of the hitherto unobserved 2Δ molecular state. The mixing coefficients obtained are close to the ones predicted from the model of polarizable ions where the A and B states correlate to the Ca+ (2D) + Cl- (2S) states of the separated ions.