Abstract

The photofragmentation spectrum of the Sr+Ar2 cluster has been recorded in a time of flight mass spectrometer and in the energy range 21000–27000 cm-1. Three absorption bands are observed which are related to transitions from the ground electronic state, X2A1, to the three states that correlate with 5p orbitals of Sr+. The first and third bands result from the production of pure Sr+, while the second band is associated with the production of Sr+ and Sr+Ar in almost equal amounts. Potential energy surfaces computed using a one electron perturbation theory and expression in analytical forms offer a framework for the interpretation of the photofragmentation spectra.

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