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Radiation loss from inertially confined degenerate plasmas

Published online by Cambridge University Press:  25 March 2004

SHALOM ELIEZER
Affiliation:
Soreq Nuclear Research Center, Yavne, Israel
PABLO T. LEÓN
Affiliation:
Institute of Nuclear Fusion, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, Spain
JOSÉ M. MARTINEZ-VAL
Affiliation:
Institute of Nuclear Fusion, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, Spain
DIMITRI V. FISHER
Affiliation:
Soreq Nuclear Research Center, Yavne, Israel

Abstract

Bremsstrahlung is one of the most important energy loss mechanisms in achieving ignition, which is only possible above a threshold in temperature for a given fusion reaction and plasma conditions. A detailed analysis of the bremsstrahlung process in degenerate plasma points out that radiation energy loss is much smaller than the value given by the classical formulation. This fact seems not useful to relax ignition requirements in self-ignited targets, because it is only relevant at extremely high densities. On the contrary, it can be very positive in the fast ignition scheme, where the target is compressed to very high densities at a minimum temperature, before the igniting beamlet is sent in.

Type
Research Article
Copyright
© 2003 Cambridge University Press

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