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Kinetics of the melting front in two-dimensional plasma crystals: Complementary analysis with the particle image and particle tracking velocimetries

J. D. Williams1,*, E. Thomas, Jr.2, L. Couëdel3, A. V. Ivlev4, S. K. Zhdanov4, V. Nosenko4, H. M. Thomas4, and G. E. Morfill4

  • 1Department of Physics, Wittenberg University, Springfield, Ohio 45504, USA
  • 2Department of Physics, Auburn University, Auburn, Alabama 36849, USA
  • 3Laboratoire de Physique des Interactions Ioniques et Moléculaires, Centre National de la Recherche Scientifique, Aix-Marseille-Université, 13397 Marseille Cedex 20, France
  • 4Max Planck Institute for Extraterrestrial Physics, 85741 Garching, Germany

  • *jwilliams@wittenberg.edu
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Phys. Rev. E 86, 046401 – Published 11 October, 2012

DOI: https://doi.org/10.1103/PhysRevE.86.046401

Abstract

Melting of a two-dimensional plasma crystal occurring due to a mode-coupling instability is studied using particle tracking and particle image velocimetry techniques. By combining these techniques, it is possible to identify the location of a propagating melting front and find a characteristic scale length for the temperature gradient across the front. It is found that the measurements of heat transport are consistent with a simple two-dimensional model allowing us to estimate the thermal diffusivity. The measured values for the thermal diffusivity are consistent with previously measured values.

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Phys. Rev. E 86, 046401– Published 11 October, 2012
  • Received 1 June 2012
Article part of CHORUS

©2012 American Physical Society

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