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Energy dissipation in insulators induced by swift heavy ions: A parameter study

Published online by Cambridge University Press:  27 April 2010

O. Osmani
Affiliation:
Department of Physics, University of Duisburg-Essen, Duisburg, Germany Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Kaiserslautern, Germany
H. Lebius
Affiliation:
CIMAP (CEA-CNRS-ENSICAEN-UCBN), Caen Cedex, France
B. Rethfeld*
Affiliation:
Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Kaiserslautern, Germany
M. Schleberger
Affiliation:
Department of Physics, University of Duisburg-Essen, Duisburg, Germany
*
Address correspondence and reprint requests to: B. Rethfeld, Department of Physics, University of Kaiserslautern and Research Center OPTIMAS, D-67653 Kaiserslautern, Germany. E-mail: rethfeld@physik.uni-kl.de

Abstract

The irradiation of solids with high energy laser or particle beams has led to a deeper understanding of the relaxation processes inside the target material. However, a lot of open questions remain. In the present paper, we will examine the irradiation of the model system Xe23+ @ 93 MeV → SrTiO3 within the framework of the two-temperature-model and study the electron-phonon-coupling g and the electron diffusivity De as well as the lattice diffusivity Dp. These are crucial parameters for which no experimental data is available. Experimentally, g is very difficult to measure and therefore theoretical predictions are of great importance. With the approach presented here it is possible to determine the coupling-constant by one order of magnitude.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2010

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