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Abstract:
A state-selective laser-induced-fluorescence technique has been used to determine the radiative lifetime and quenching kinetics for the XeF (B 1/2) excited state. Fluorine atoms are formed by flash dissociating a mixture of UF6 and Xe in He. After a suitable delay to allow recombination of Xe and F atoms, ground state XeF molecules are excited to the XeF (B 1/2) state by passing a 3511 A XeF laser beam through the cell. The fluorescence decay at 3533 A is monitored perpendicular to the exciting light using a spectrometer- photomultiplier combination. Quenching rate coefficients for the collision partners He, Xe, F2, and NF3 have been determined. Fluorescence emission at 460 nm due to collisional transfer from the XeF (B 1/2) to the XeF (C 1/2) state has also been observed.
| Pages: |
19 |
| Report Date: |
30 AUG 1977 |
| Contract Number: |
N00014-76-C-1066, DARPA Order- |
| Report Number: |
A089701 |
Report Unavailable |
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