TITLE

Critical analysis of the band-shape function of a molecular system imbedded in a host crystal: Application to F centers

AUTHOR(S)
West, J.; Lin, S. H.; Tsen, K. T.
PUB. DATE
November 1993
SOURCE
Journal of Chemical Physics;11/15/1993, Vol. 99 Issue 10, p7574
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present an investigation of the accuracy of the saddle-point method in application to band-shape functions and find that it gives excellent results for most commonly encountered situations. We also present a comparison with a new improved short-time approximation which shows promise in applications. We use this new method to examine the behavior of the band-shape function in a distorted oscillator model. As an application, we have used these methods to explain the absorption and emission spectra of an F-center defect (a prototype defect system) in four different host crystals KCl, KI, KBr, and NaCl.
ACCESSION #
7645081

 

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