AB-INITIO CALCULATION OF THE VIBRONIC SPE CTRUM OF GESI - VALENCE STATES OF GESI+

On the basis of ab-initio calculations of valence state energies and t ransition moments, it is shown that the ground state of the GeSi molec ule, as yet unobserved in the gas phase, is a triplet state and that i ts absorption electronic spectrum (Rydberg excluded) consists of three charge transfer triplet-triplet systems which appear in the near ultr aviolet. In emission, apart from these three systems and their singlet -singlet counterparts, an electronic transition between singlet states should be observed in the infrared. Additional calculations on GeSipredict a 4SIGMA- ground state for this ion.