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Vibrational dephasing under fractional (“stretched”) exponential modulation

✍ Scribed by Walter G. Rothschild; Michel Perrot; François Guillaume

Book ID
103028546
Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
404 KB
Volume
128
Category
Article
ISSN
0009-2614

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✦ Synopsis

A fractional (or stretched) time exponential, F(1) = exp[ -(t/F)"], where O<cr< 1, T a time constant, is proposed as the modulation function for vibrational band-narrowing in locally structured, amorphous media. It leads to physically sounder modulation times than current, pure exponential models, yields the same superior data fit as recently proposed, two-process relaxation mechanisms and promises useful and interesting physical insight into structuml-dyamicai aspects of the systems.

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