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Effect of the increase of molecular complexity on statistical properties of vibrational spectra

โœ Scribed by R. Cimiraglia; A. Ferretti; N.K. Rahman

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
438 KB
Volume
151
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

We present for the first time a study on the influence of the increase in the number of molecular vibrational degrees of freedom on level statistics. A model of three Morse oscillators coupled by Wilson terms has been considered for tetratomic molecules and the level statistics of its spectra have been studied III comparison with that of an analogous two-oscillator model for triatomics. The nearest-neighbor level spacing distribution for three oscillators is essentially a Wigner distribution. while for two oscillators it is a Rrody distribution, which is intermediate between a Poisson and a Wigner distribution.

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