Intermolecular potential energy surfaces for the interaction between H2X (XO, S) and a metastable Ne*(3P2,0) atom

Potential energy surfaces for the interaction of a Ne*(3P2,0) atom with H2O and H2S molecules are obtained on the basis of a semi empirical method that has been previously used for some specific orientations in Ne*(3P2,0)–H2O system. The method is now suitable for all orientations and also for Ne*(3P2,0)–H2S system. Interesting features emerge by comparing the two systems and appear related to different characteristics of the two molecular partners. The potential energy surface for Ne*(3P2,0)–H2S has been also successfully tested for reproducing recent experimental Penning ionization electron spectroscopy data, sensible to some specific orientations of the two colliding partners.