Abstract
A Franck–Condon analysis of a low-resolution (4 nm FWHM) H2O+ à 2A1–X̃ 2B1 spectrum is presented in order to support recent ab initio calculations of the H2O+ X̃/à Renner–Teller system that call for a reassignment of the Ã-state vibrational levels [Brommer et al., J. Chem. Phys. 98, 5222 (1993)]. ÖX̃ luminescence with well-resolved vibronic bands is observed from near-resonant Kr+(2P1/2)+H2O charge–transfer collisions. It is demonstrated that the intensity of vibronic progressions is only truthfully reproduced if the previously calculated vibronic transition moments [Jungen, Hallin, and Merer, Mol. Phys. 40, 25 (1980)] are applied to the reassigned states, thus confirming the ab initio work.
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