Dynamical structure factor of dense gases

Ranganathan, S. ; Pathak, K. N. (1984) Dynamical structure factor of dense gases Physical Review A, 29 (6). pp. 3320-3326. ISSN 1050-2947

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Official URL: http://pra.aps.org/abstract/PRA/v29/i6/p3320_1

Related URL: http://dx.doi.org/10.1103/PhysRevA.29.3320

Abstract

The space-time memory function associated with the dynamical structure factor is expressed in terms of current-current and density-current correlation functions. We then apply the binary-collision expansion to evaluate these correlation functions. In this approximation, we include exactly all the effects of a single collision between a pair of particles. The dynamical structure factor is then evaluated from the memory function and compared with the neutron scattering data on dense krypton gas. The agreement is very good even for wave numbers below the first diffraction peak in the structure factor, indicating that the spatial correlations are included in this theory.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:55966
Deposited On:22 Aug 2011 13:01
Last Modified:22 Aug 2011 13:01

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