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Title: Heat transport in confined strongly coupled two-dimensional dust clusters

Dusty plasmas are a model system for studying strong correlation. The dust grains’ size of a few micro-meters and their characteristic oscillation frequency of a few hertz allow for an investigation of many-particle effects on an “atomic” level. In this article, we model the heat transport through an axially confined 2D dust cluster from the center to the outside. The system behaves particularly interesting since heat is not only conducted within the dust component but also transferred to the neutral gas. Fitting the analytical solution to the radial temperature profiles obtained in molecular dynamics simulations allows to determine the heat conductivity k. The heat conductivity is found to be constant over a wide range of coupling strengths even including the phase transition from solid to liquid here, as it was also found in extended systems by Nosenko et al.[Phys. Rev. Lett. 100, 025003 (2008)].
Authors:
 [1] ; ;  [2]
  1. University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom)
  2. Institut für Theoretische Physik und Astrophysik, Christian-Albrechts-Universität zu Kiel, 24098 Kiel (Germany)
Publication Date:
OSTI Identifier:
22227991
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 7; Other Information: (c) 2013 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; ANALYTICAL SOLUTION; DUSTS; ELECTRON TEMPERATURE; GRAIN SIZE; HEAT TRANSFER; ION TEMPERATURE; MOLECULAR DYNAMICS METHOD; OSCILLATIONS; PHASE TRANSFORMATIONS; PLASMA; PLASMA RADIAL PROFILES; PLASMA SIMULATION; PLASMA WAVES; THERMAL CONDUCTIVITY; TWO-DIMENSIONAL CALCULATIONS