The RgI (ion-pair states) van der Waals complexes.

This paper is an overview of our recent experimental investigations of the RgI van der Waals complexes, Rg = He, Ar, Kr, performed by means of laser induced fluorescence spectroscopy, optical-optical double resonance and supersonic molecular beam techniques. Spectroscopic parameters of these complexes in the E0 ion-pair state, such as binding energies and several spectroscopic constants, have been determined. Most likely, the potential energy surfaces of the all RgI( E) complexes under study present T-shaped minima. Vibrational and electronic predissociations of the RgI( E) complexes were analyzed. Relative contributions of the different electronic predissociation channels and vibrational distributions of the decay products were determined. Possible mechanisms of the complexes decay are suggested and discussed. [ABSTRACT FROM AUTHOR]