Irreversibility and entropy issues concerning the heating of directly transmitting ions at low Mach number perpendicular collisionless shocks

Wilkinson, W. and Ellacott, S.W. (2005) Irreversibility and entropy issues concerning the heating of directly transmitting ions at low Mach number perpendicular collisionless shocks Advances in Space Research, 37 (3). pp. 473-482. ISSN 0273-1177

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Official URL: http://dx.doi.org/10.1016/j.asr.2005.02.024

Abstract

In a previous paper the authors analysed a simple model accounting for the anisotropic temperature increase that occurs to ions at collisionless, low Mach number shocks. While a complete closed form solution for the particle distribution in phase space is not possible, many basic properties of the distribution were proved. In this paper, we apply these insights to a discussion of the thermodynamic issues: in particular the thermodynamic temperature, the adiabatic (in the thermodynamic sense) nature of the heating and the entropy. We examine how the anisotropic temperature distribution stores reversible work, and show how the entropy associated with the temperature increase at the shock remains constant prior to thermalisation.

Item Type:Journal article
Uncontrolled Keywords:Collisionless shocks; Ion heating; Non-equilibrium thermodynamics
Subjects:G000 Computing and Mathematical Sciences
DOI (a stable link to the resource):10.1016/j.asr.2005.02.024
Faculties:Faculty of Science and Engineering > School of Computing, Engineering and Mathematics > Computational Mathematics
ID Code:3056
Deposited By:Helen Webb
Deposited On:08 Nov 2007
Last Modified:03 May 2012 12:28

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