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Title: Ion sphere model for Yukawa systems (dusty plasmas)

Application of the ion sphere model (ISM), well known in the context of the one-component-plasma, to estimate thermodynamic properties of model Yukawa systems is discussed. It is shown that the ISM approximation provides fairly good estimate of the internal energy of the strongly coupled Yukawa systems, in both fluid and solid phases. Simple expressions for the excess pressure and isothermal compressibility are derived, which can be particularly useful in connection to wave phenomena in strongly coupled dusty plasmas. It is also shown that in the regime of strong screening a simple consideration of neighboring particles interactions can be sufficient to obtain quite accurate estimates of thermodynamic properties of Yukawa systems.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [1]
  1. Forschungsgruppe Komplexe Plasmen, Deutsches Zentrum für Luft- und Raumfahrt, Oberpfaffenhofen (Germany)
  2. (Russian Federation)
  3. Joint Institute for High Temperatures RAS, Moscow (Russian Federation)
  4. Max-Planck-Institut für extraterrestrische Physik, Garching (Germany)
Publication Date:
OSTI Identifier:
22407963
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 12; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APPROXIMATIONS; COMPRESSIBILITY; FLUIDS; IONS; PARTICLE INTERACTIONS; PLASMA; SOLIDS; SPHERES; THERMODYNAMIC PROPERTIES; YUKAWA POTENTIAL