MULTI-PHOTON PHOTODISSOCIATION OF XENON DIFLUORIDE
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Date
1984
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Ohio State University
Abstract
When xenon difluoride is irradiated with the focussed fourth harmonic of a Nd-YAG laser, $XeF (B(1/2) - X(1/2))$ and $D(1/2)-X(1/2)$ emission results. Measurements of fluorescence intensity versus laser intensity show a multiphoton process is involved. Time-resolved XeF emission, dispersed at a resolution of 0.64 nm, was measured at 10 nsec intervals after the photodissociation using a boxcar integrator. XeF is initially produced primarily in the $D(1/2)$ state, and there is evidence of subsequent collision-induced transfer to the $B(1/2)$ state. Radiative lifetimes of states with low vibrational quantum numbers were determined at several wavelengths within the B-X and D-X transitions, both for two different xenon difluoride pressures and as a function of added nitrogen pressure. The vibrational distribution in the $D(1/2)$ state has been determined under these conditions.
Description
Supported by NSF Grant CHE-8209576
Author Institution: Chemistry Department, Drexel University
Author Institution: Chemistry Department, Drexel University