Theoretical prediction of the ArO- anion ZEKE photoelectron spectrum

High-resolution zero electron kinetic energy spectra of the weakly bound Ar O- anion are predicted using the method which combines atoms-in-molecule an d Rau-Fano models for calculating relative intensities and accurate ab init io interaction potentials. ZEKE spectrum envelope and its temperature varia tion are shown to be essentially determined by the electronic photodetachme nt probabilities which are highly selective with respect to the symmetry of the spin-orbit components of anion and neutral electronic states. (C) 2001 Published by Elsevier Science B.V.