Radiative Lifetime and Quenching Kinetics for the XeF (B 1/2) State
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 30, 1977
- Accession Number
- ADA107980
Entities
People
- C. H. Fisher
- R. E. Center