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Interpolated Mean Spherical Approach to the Energy Equation of State of the Classical One‐Component Plasma Fluid
Author(s) -
Kahlbaum Torsten,
Dewitt Hugh E.
Publication year - 1993
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.2150330534
Subject(s) - physics , equation of state , plasma , component (thermodynamics) , hard spheres , spheres , atomic packing factor , monte carlo method , internal energy , phase (matter) , limit (mathematics) , fraction (chemistry) , statistical physics , thermodynamics , quantum mechanics , mathematical analysis , statistics , mathematics , chemistry , organic chemistry , nuclear magnetic resonance , astronomy
We present a fit formula for the excess internal energy of the one‐component plasma in the fluid phase that was obtained from the analytic solution of the mean spherical approximation for charged hard spheres in a uniform neutralizing background by utilizing a new relation for the effective packing fraction. Our results are in much better agreement to recent Monte Carlo data for strong coupling, Γ ≥ 1, than previous results from similar calculations, and extend down to the Debye limit, Γ → 0.