| Numéro |
J. Phys. Colloques
Volume 41, Numéro C8, Août 1980
Fourth International Conference on Liquid and Amorphous Metals
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|---|---|---|
| Page(s) | C8-293 - C8-296 | |
| DOI | https://doi.org/10.1051/jphyscol:1980874 | |
Fourth International Conference on Liquid and Amorphous Metals
J. Phys. Colloques 41 (1980) C8-293-C8-296
DOI: 10.1051/jphyscol:1980874
1 Department of Physics, Purdue Univ., West Lafayette, Indiana 47907.
2 James Franck Institute and Department of Physics, Univ. of Chicago, Chicago, Illinois 60637.
3 Argonne National Laboratory, Argonne, Illinois 60439.
J. Phys. Colloques 41 (1980) C8-293-C8-296
DOI: 10.1051/jphyscol:1980874
QUENCH ECHOES IN LENNARD-JONES AND RUBIDIUM FROZEN FLUIDS--TEMPERATURE DEPENDENCE OF THE ANHARMONIC BEHAVIOR
G.S. Grest1, S.R. Nagel2 et A. Rahman31 Department of Physics, Purdue Univ., West Lafayette, Indiana 47907.
2 James Franck Institute and Department of Physics, Univ. of Chicago, Chicago, Illinois 60637.
3 Argonne National Laboratory, Argonne, Illinois 60439.
Abstract
We have found a new echo phenomenon that appears in molecular dynamics simulations of a solid. The echo appears in the behavior of the temperature after the system recovers from two abrupt quenches. This effect can be explained in terms of classical normal mode analysis of the system. We have applied these echo techniques to the study of close packed glasses with Lennard-Jones and rubidium interatomic potentials. We have been able to study the degree of anharmonic behavior in the system as a function of temperature as the sample is heated from the glass to the liquid state. We have also studied this behavior when the attractive and repulsive terms in the Lennard-Jones potential are varied.