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The itinerant oscillator model: Dielectric relaxation in the presence of non-linear dipole-dipole coupling

✍ Scribed by Fabio Marchesoni

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 357 KB
Volume: 112
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(84)85749-8

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✦ Synopsis

The problem of including both inertial and non-linear effects in the dielectric rehxsation of an assembly of molecules containing rotating polar groups is treated analytically_ Approximate solutions for the dipole autocorrelation function and the comples polartiability sugest that the related relaxation dynamics is to be regarded as mostly diffusional in its nature when a strong dipole-dipole coupling is assumed, contrary to the predictions of the corresponding linear models.

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The non-linear itinerant oscillator mode

The non-linear itinerant oscillator model: the effect on the polarisability spectrum of including barrier-crossing by dipoles

✍ W.T. Coffey; P.M. Corcoran 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 456 KB

Analysis of the itinerant oscillator model of polar fluids has hitherto been concentrated on the small-oscillation approximation. This has neglected one important contribution to the dynamic polarization, namely relaxation due to crossing of dipoles over the hills of the cosine potential for dipole-