Gregori, Gianluca and Gericke, Dirk O.. (2008) A reduced coupled-mode description for the electron-ion energy relaxation in dense matter. Europhysics Letters, Vol.83 . p. 15002. ISSN 0295-5075

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Abstract

We present a simplified model for the electron-ion energy relaxation in dense two-temperature systems that includes the effects of coupled collective modes. It also extends the standard Spitzer result to both degenerate and strongly coupled systems. Starting from the general coupled-mode description, we are able to solve analytically for the temperature relaxation time in warm dense matter and strongly coupled plasmas. This was achieved by decoupling the electron-ion dynamics and by representing the ion response in terms of the mode frequencies. The presented reduced model allows for a fast description of temperature equilibration within hydrodynamic simulations and an easy comparison for experimental investigations. For warm dense matter, both fluid and solid, the model gives a slower electron-ion equilibration than predicted by the classical Spitzer result.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Electron-ion collisions, Plasma density, Plasma heating, Hydrodynamics, Electron gas
Journal or Publication Title:	Europhysics Letters
Publisher:	EDP Sciences
ISSN:	0295-5075
Date:	July 2008
Volume:	Vol.83
Page Range:	p. 15002
Identification Number:	10.1209/0295-5075/83/15002
Status:	Peer Reviewed
Access rights to Published version:	Restricted or Subscription Access
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URI:	http://wrap.warwick.ac.uk/id/eprint/1432

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