Measurements of XeF (xenon fluoride) ground-state dissociation and vibrational equilibration. Technical report

Technical Report · Fri Mar 25 04:00:00 EST 1988

OSTI ID:7085612

Bott, J F; Heidner, R F; Holloway, J S; Koffend, J B; Kwok, M A

The removal rates of the lower levels of the laser transitions affect the efficiency of the XeF excimer-laser performance. The authors deduced the removal rates of XeF(X,v) in argon, helium, and neon by measuring the populations of v = 0 and 1 vibrational levels formed by the photolysis of XeF/sub 2/. The time history of each vibrational population is monitored with a c-w tunable dye laser tuned to an absorption feature of the selected vibrational/rotational level. The studies show a rapid vibrational relaxation of v = 0 and v = 1 levels followed by a common decay rate of the two levels. Helium and neon were found to remove these levels with the same rate coefficient of (2.0 + or - 0.2) x 10/sup 4//(sec-Torr)/sup -1/ at room temperature. The rate coefficients for argon were faster by about 25%. The removal-rate coefficients increased with temperature in the range of 23 to 95 C.

• Research Organization: Aerospace Corp., El Segundo, CA (USA). Aerophysics Lab.
• OSTI ID: 7085612
• Report Number(s): AD-A-194611/0/XAB; TR-0088(3930-04)-1
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ABSORPTION
ARGON
CHEMICAL REACTIONS
DECAY
DECOMPOSITION
DISSOCIATION
DOCUMENT TYPES
ELEMENTS
ENERGY LEVELS
EXCIMER LASERS
EXCITED STATES
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
GAS LASERS
GASES
HALIDES
HALOGEN COMPOUNDS
HELIUM
LASERS
NEON
NONMETALS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PROGRESS REPORT
RARE GAS COMPOUNDS
RARE GASES
VIBRATIONAL STATES
XENON COMPOUNDS
XENON FLUORIDES