Kinetic techniques applied to Briggs-Rauscher oscillator and xenon fluoride. I. Kinetic study of Briggs-Rauscher oscillator. II. Study of lower energy level kinetics of XeF

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:7002861

Mahon, M J

An understanding of the lower energy states of the xenon fluoride molecule is important in engineering an efficient XeF laser. This study concerns the energy transfer from the D to the B electronic states in the presence of five buffer gases: XeF/sub 2/, He, Ne, Ar and N/sub 2/. A Nd:YAG laser's fourth harmonic, uv output (266 nm) is focused into XeF/sub 2/ vapor, producing excited-state XeF. The laser-induced fluorescence signal is dispersed by a monochromator and monitored with a boxcar averager system. The fluorescence intensity measured over a 100-nsec period after the laser pulse is compared to a mathematical mode. This model is developed form the set of differential equations describing the times evolution of the D, B, and C electronic-state populations of XeF. RS1 and Runge-Kutta fourth-order methods are used to numerically fit the theoretical model to the experimental data. The D to B energy-state-transfer rate constant (k/sub DB/) is adjusted to provide the best fit, using the F test as the goodness of fit criterion. From the numerical fitting, the B to C energy-state-transfer rate constant (k/sub BC/) is shown to cause difficulties in the case with argon and nitrogen buffers.

• Research Organization: Drexel Univ., Philadelphia, PA (USA)
• OSTI ID: 7002861
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ELECTRONIC EQUIPMENT
ENERGY LEVELS
ENERGY TRANSFER
EQUIPMENT
EXCIMER LASERS
FLUORESCENCE
FLUORIDES
FLUORINE COMPOUNDS
GAS LASERS
HALIDES
HALOGEN COMPOUNDS
ITERATIVE METHODS
LASERS
LUMINESCENCE
NUMERICAL SOLUTION
OSCILLATORS
RARE GAS COMPOUNDS
RUNGE-KUTTA METHOD
XENON COMPOUNDS
XENON FLUORIDES