Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Electronic relaxai:ion of Xe,CI in gaseous and supercritical fluid xenon F. Okada"'and V. A. Apkarianb)
 

Summary: Electronic relaxai:ion of Xe,CI in gaseous and supercritical fluid xenon
F. Okada"'and V. A. Apkarianb)
Department of Chemistry, University of California, Irvine, California 92717
(Received 28 July 1990; accepted 17 September 1990)
Spectroscopic and kinetic studies of the triatomic Xe, Cl exciplex in gaseous and supercritical
fluid xenon up to 150 atm are reported. Clustering of the exciplex with Xe atoms is observed
and its effect on spectral shifts, radiative lifetimes, and collisional deactivation are discussed. A
kinetic treatment, incorporating diffusion controlled encounter probabilities, is used for the
analysis of the relaxation data throughout the studied range. The radiative lifetime of the
exciplex is observed to be 328 ( ~fi20) ns, the exciplex is quenched by molecular chlorine with a
rate constant of 7( _t 1) x 10-l' cm3 s ~ `, while quenching by Xe is imperceptible even at the
highest densities, implying a rate constant < 10 - " cm3 s - `. Observations of transient loss, and
their implications with respect to condensed phase triatomic rare gas halide exciplex lasers, are
discussed.
I. INTRODUCTION
The triatomic rare gas halides, Rg: X -, form a fasci-
nating family of exciplexes that have been the subject of both
theoretical and experimental studies in the gas phase.' More
recently they have been employed in both solid state and
liquid phase investigations of charge transfer and reaction

  

Source: Apkarian, V. Ara - Department of Chemistry, University of California, Irvine

 

Collections: Chemistry