Intense Pulsed Proton Source (Time and Wavelength Resolved Studies of Xenon, Liquid Xenon, and XeF2.
Abstract
Time and wavelength resolved spectroscopic measurements have been performed for xenon gas excited by 2.0 MeV protons. Reaction rate constants for the formation and decay of the 3 Sigma sub u and the 1 Sigma sub u states in Xe sub 2* via three body collisions are 31 Hz/Torr square and 61 Hz/torr square, respectively. A kinetic model based on the experimental facts is presented and is examined. The lifetime of the 3 Sigma sub u state in Xe sub 2* has been measured to be 102 ns. Single proton counting techniques were used, and both the 172 nm radiation from the 3 Sigma sub u state as well as the 152 nm radiation from the 1 Sigma sub u state were monitored as a function of time and pressure. The rate constants of interest have been extracted from the pressure dependence of the decay times. Ion recombination kinetic processes were clearly distinguishable at higher pressures and could be dealt with independently from the excited state channel reactions. Tests were performed to insure that events which occur late in time following excitation were actually ion recombination processes. Absolute conversion efficiencies were measured for proton energy input to 172 nm proton energy output.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 26, 1981
- Accession Number
- ADA104094
Entities
People
- James E. Gaiser
- John R. Williams
Organizations
- Auburn University