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Volume 150,number 3,4 CHEMICAL PHYSICS LETTERS 16September 1988 EXPERIMENTAL STUDIES ON PHOTODISSOCIATION
 

Summary: Volume 150,number 3,4 CHEMICAL PHYSICS LETTERS 16September 1988
EXPERIMENTAL STUDIES ON PHOTODISSOCIATION
OF HI IN CRYSTALLINE XENON
W. LAWRENCE, F. OKADA ' and V.A. APKARlAN
Department of Chemistry and Institutefor Surface and Interface Science, Universityof California, Irvine, CA 92717, USA
Received 27 May 1988
The photodissociation of HI at 277 nm in crystalline xenon is followed by monitoring the Xe,I exciplexic emission. Above 110
K, the product I atoms diffuse and recombine as 12.Between 110and 80 K dissociation is permanent, and diffusion of I atoms is
halted. Below 80 K amorphization ofthe solid is observed. The inclusion crystals are grown from the melt. Crystallinity is verified
by the exciplexic lineshift.
1. Introduction
A theoretical study of the photodissociation of HI
in crystalline xenon was recently presented [ 11,
These molecular dynamical simulations were in-
spired by the fact that such solids could be repro-
ducibly prepared in our laboratory. The system can
be regarded as one of the simplest prototypes of con-
densed-phase reactive dynamics, and as such may
provide a fundamental understanding of many-body
interactions. Three criteria are deemed essential for

  

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

 

Collections: Chemistry