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Volume compression and volume ignition of laser driven fusion pellets

Published online by Cambridge University Press:  09 March 2009

G. Kasotakis ,
L. Cicchitelli ,
H. Hora  and
R. J. Stening
G. Kasotakis
Affiliation:
Department of Theoretical Physics, University of New South Wales, Kensington 2033, Australia.
L. Cicchitelli
Affiliation:
Department of Theoretical Physics, University of New South Wales, Kensington 2033, Australia.
H. Hora
Affiliation:
Department of Theoretical Physics, University of New South Wales, Kensington 2033, Australia.
R. J. Stening
Affiliation:
Department of Theoretical Physics, University of New South Wales, Kensington 2033, Australia.
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Abstract

Volume compression and volume ignition of laser compressed pellets has an enormous advantage against spark ignition since the alpha self-heat substantially contributes as an additional stimulation of nuclear fusion reactions. We present here improved computations of volume ignition in agreement with the classical fact that the generated fusion energy is larger than the bremsstrahlung energy in DT only at temperatures above 4·5 keV. This result is in very close agreement with Kidder's (1974) values, and in agreement with recent computations of Mima et al. (1987). The extension of these calculations to higher densities and input energies results in the self-absorption of bremsstrahlung at an initial temperature of about 1 keV only, much below the classical 4·5 keV. A fuel burnup fraction above 80% is shown to be possible.

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Type
Research Article
Information
Laser and Particle Beams , Volume 7 , Issue 3 , August 1989 , pp. 511 - 520
Copyright
Copyright © Cambridge University Press 1989

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