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Nonideality effects on temperature relaxation

Published online by Cambridge University Press:  04 April 2003

D.O. GERICKE ,
M.S. MURILLO  and
M. SCHLANGES
D.O. GERICKE
Affiliation:
Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
M.S. MURILLO
Affiliation:
Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
M. SCHLANGES
Affiliation:
Institut für Physik, E.-M.-Arndt–Universität Greifswald, Domstr. 10a, 17487 Greifswald, Germany
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Abstract

The relaxation of two-temperature electron–ion systems is investigated. We apply a quantum kinetic approach which is suitable to treat strong electron–ion coupling and avoids any ad hoc cut-off procedures. A comparison with the usual Landau–Spitzer formula gives good agreement for Coulomb logarithms larger than three, whereas larger relaxation rates were found for strongly coupled plasmas. It is shown that the Landau–Spitzer theory can be greatly improved considering hyperbolic orbits. Numerical results for the energy transfer rates and the temporal behavior of the electron temperature are shown.

Keywords

Temperature equilibrationStrongly coupled plasmasBinary electron-ion collisions
Type
14th INTERNATIONAL HEAVY ION INERTIAL FUSION SYMPOSIUM PAPERS
Information
Laser and Particle Beams , Volume 20 , Issue 4 , October 2002 , pp. 543 - 545
Copyright
© 2002 Cambridge University Press

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