TY - JOUR
T1 - Comment on "collective modes in fluids and neutron scattering"
AU - Marchetti, M. Cristina
AU - Garland, Gregory E.
AU - Dufty, James W.
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1982
Y1 - 1982
N2 - de Schepper and Cohen have shown recently that the hydrodynamic modes for a hardsphere fluid may be extended to quite large wave vectors, and that at high densities the hydrodynamic part of the dynamical-structure factors dominates over a wide range of wave vectors. The objective here is to describe the results of a similar analysis of two simple models of the self-structure factor. The simplicity of the models allows a scaling of the frequency and wave vectors such that a universal form independent of potential model, density, and temperature is obtained. The diffusion mode and hydrodynamic part of the self-structure factor are calculated, leading to a behavior similar to that observed by de Schepper and Cohen.
AB - de Schepper and Cohen have shown recently that the hydrodynamic modes for a hardsphere fluid may be extended to quite large wave vectors, and that at high densities the hydrodynamic part of the dynamical-structure factors dominates over a wide range of wave vectors. The objective here is to describe the results of a similar analysis of two simple models of the self-structure factor. The simplicity of the models allows a scaling of the frequency and wave vectors such that a universal form independent of potential model, density, and temperature is obtained. The diffusion mode and hydrodynamic part of the self-structure factor are calculated, leading to a behavior similar to that observed by de Schepper and Cohen.
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U2 - 10.1103/PhysRevA.25.1218
DO - 10.1103/PhysRevA.25.1218
M3 - Review article
AN - SCOPUS:35949018304
SN - 1050-2947
VL - 25
SP - 1218
EP - 1221
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
ER -