Rank dependence of orientational relaxation in dipolar systems

Ravichandran, Sarangan ; Bagchi, Biman (1994) Rank dependence of orientational relaxation in dipolar systems Journal of Physical Chemistry, 98 (11). pp. 2729-2731. ISSN 0092-7023

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Official URL: http://pubs.acs.org/doi/abs/10.1021/j100062a004

Related URL: http://dx.doi.org/10.1021/j100062a004


An important yet unsolved problem in the field of orientational relaxation in dipolar liquids is the dependence of the correlation functions Cl(t), Cl(t) = [4π/(2l + 1)Σm = -1l [Y*lm(Ω(0)Ylm(Ω(t))] on the rank l (where Ylm(Ω) are the usual spherical harmonics). The existing theories on this effect differ in their predictions. To investigate this, we have carried out extensive computer simulations of a Brownian dipolar lattice. The dielectric friction was found to decrease rapidly with increasing l, in qualitative agreement with the predictions of Hubbard-Wolynes. However, the observed effect is much stronger than the predictions of the existing theories.

Item Type:Article
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ID Code:4362
Deposited On:18 Oct 2010 08:45
Last Modified:10 Jan 2011 06:19

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