Abstract
Single isotopomer (2+1) resonantly enhanced multiphoton ionization (REMPI) spectra of jet-cooled XeKr have been recorded using time-of-flight (TOF) mass detection. Vibrational analyses for several transitions involving excited states that dissociate to Kr(1S0)+Xe* (6p,5d) between 77 560 and 80 150 cm−1 are reported for the first time. Equilibrium bond lengths were established by Franck–Condon calculations, while excited state symmetries were inferred from excitation spectra recorded using circularly polarized light. A local vibrational perturbation evident in the dominant band system dissociating to Kr(1S0)+Xe*5p56p[5/2]2 has also been analyzed. The identity of the perturbing state is proposed, based in part, on predissociation spectra obtained by monitoring atomic fragments in TOF detection.
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