Bellan, P. M. (2004) A model for the condensation of a dusty plasma. Physics of Plasmas, 11 (7). pp. 3368-3379. ISSN 1070-664X. http://resolver.caltech.edu/CaltechAUTHORS:BELpop04
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A model for the condensation of a dusty plasma is constructed by considering the spherical shielding layers surrounding a dust grain test particle. The collisionless region less than a collision mean free path from the test particle is shown to separate into three concentric layers, each having distinct physics. The method of matched asymptotic expansions is invoked at the interfaces between these layers and provides equations which determine the radii of the interfaces. Despite being much smaller than the Wigner–Seitz radius, the dust Debye length is found to be physically significant because it gives the scale length of a precipitous cut-off of the shielded electrostatic potential at the interface between the second and third layers. Condensation is predicted to occur when the ratio of this cut-off radius to the Wigner–Seitz radius exceeds unity and this prediction is shown to be in good agreement with experiments.
|Additional Information:||©2004 American Institute of Physics. (Received 5 January 2004; accepted 23 March 2004; published online 27 May 2004)|
|Subject Keywords:||dusty plasmas; plasma simulation; electrostatics; plasma collision processes; plasma thermodynamics|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||22 Feb 2006|
|Last Modified:||26 Dec 2012 08:46|
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