Vorberger, Jan and Gericke, Dirk O. (2012) Theory of electron-ion energy transfer applied to laser ablation. In: International Symposium on High Power Laser Ablation, New Mexico, USA, 30 Apr -3 May 2012. Published in: AIP Conference Proceedings, Volume 1464 pp. 572-581. doi:10.1063/1.4739910 ISSN 0094-243X.

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Abstract

Electron-ion temperature equilibration will be considered for states of matter typically occurring during laser ablation that is for strongly heated electrons and densities similar and lower than the one in the solid. The focus will be on fluid systems after the melt of the lattice as these dominate the hydrodynamic phase of the ablation process. It is shown that simple expressions derived for dilute gases and plasmas become highly questionable for solid-density fluids whereas the electron-phonon picture is inapplicable as well. Instead, one has to consider the collective behavior of electrons and ions in the strongly coupled fluid. The strong inter-ionic forces also strongly affect the heat capacities applied in a two-temperature model. The results presented here are based on a quantum-statistical approach applying nonequilibrium Green's functions.

Item Type:	Conference Item (Paper)
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	AIP Conference Proceedings
Publisher:	American Institute of Physics
ISSN:	0094-243X
Official Date:	2012
Dates:	Date Event 2012 Published
Volume:	Volume 1464
Page Range:	pp. 572-581
DOI:	10.1063/1.4739910
Status:	Peer Reviewed
Publication Status:	Published
Conference Paper Type:	Paper
Title of Event:	International Symposium on High Power Laser Ablation
Type of Event:	Conference
Location of Event:	New Mexico, USA
Date(s) of Event:	30 Apr -3 May 2012

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