AB-INITIO CALCULATION OF THE POTENTIAL SURFACES AND THE ELECTRONIC-TRANSITION MOMENTS FOR THE VALENCE AND RYDBERG DOUBLET ELECTRONIC STATES OF BH2

The bending and symmetric stretching potential curves for the low-lying doublet electronic states of the BH2 radical are calculated by means of the configuration interaction method. Special attention is paid to consideration of the interaction between valence and Rydberg-type species. The dissociation of BH, in its various electronic states into H + B + H is studied. The results of calculations predict a complicated structure of both, the absorption and emission spectra caused by a number of avoided crossings between the excited states of the same symmetry in the geometry region close to the equilibrium geometry of the ground state.