Hard sphere-like dynamics in a non hard sphere liquid
Disordered Systems and Neural Networks
2009-11-11 v1 Statistical Mechanics
Abstract
The collective dynamics of liquid Gallium close to the melting point has been studied using Inelastic X-ray Scattering to probe lengthscales smaller than the size of the first coordination shell. %(momentum transfers, , 15 nm). Although the structural properties of this partially covalent liquid strongly deviate from a simple hard-sphere model, the dynamics, as reflected in the quasi-elastic scattering, are beautifully described within the framework of the extended heat mode approximation of Enskog's kinetic theory, analytically derived for a hard spheres system. The present work demonstrates the applicability of Enskog's theory to non hard- sphere and non simple liquids.
Cite
@article{arxiv.cond-mat/0503140,
title = {Hard sphere-like dynamics in a non hard sphere liquid},
author = {T. Scopigno and R. Di Leonardo and L. Comez and A. Q. R. Baron and D. Fioretto and G. Ruocco},
journal= {arXiv preprint arXiv:cond-mat/0503140},
year = {2009}
}
Comments
5 pages, 2 figures, accepted in Phys. Rev. Lett