Intense pulsed proton source: time and wavelength resolved studies of xenon, liquid xenon, and XeF/sub 2/. Final contractors report 31 May 79-29 Jan 81

Technical Report · Fri Jun 26 04:00:00 EDT 1981

OSTI ID:5458394

Williams, J R; Gaiser, J E

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.

• Research Organization: Auburn Univ., AL (USA). Dept. of Physics
• OSTI ID: 5458394
• Report Number(s): AD-A-104094/8
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CATIONS
CHARGED PARTICLES
COLLISIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
GASES
HALIDES
HALOGEN COMPOUNDS
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
IONS
MEV RANGE
MEV RANGE 01-10
MOLECULE COLLISIONS
NONMETALS
RARE GAS COMPOUNDS
RARE GASES
RECOMBINATION
XENON
XENON COMPOUNDS
XENON FLUORIDES