Kinetic Studies for XeF and KrF Lasers
Quarterly R and D status rept. no. 3
MATHEMATICAL SCIENCES NORTHWEST INC BELLEVUE WA
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The goal of this program is to determine the radiative lifetime and the collisional quenching rate coefficients for the XeF and KrF upper laser levels using a state selective, laser excited fluorescence technique. Details of the experimental procedure were described in our semi-annual report. During this reporting period, we have determined the XeFB12 radiative lifetime by monitoring the decay of the 353 nm XeFB12 to X fluorescence as a function of pressure. Preliminary collisional quenching rate constants have been determined for He, Xe, and F2 from the variation of the fluorescence decay time constant as a function of partial pressure of the collision partner. Collisional quenching by Ar was investigated however, no bimolecular rate constant was determined because of nonexponential decay of the XeFB to X emission in the presence of Ar. This behavior suggests collisional coupling to some other excited state, most likely the XeFC32 state.
- Radiation and Nuclear Chemistry
- Lasers and Masers