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Effect of thermal flux inhibition on the coupling of core with hot corona in a laser irradiated plasma pellet

Published online by Cambridge University Press:  09 March 2009

D. P. Singh ,
J. J. E. Herrera  and
M. Vaselli
D. P. Singh
Affiliation:
Istituto di Fisica Atomica e Molecolare del C.N.R., Via del Giardino, 7 56100 Pisa, Italy.
J. J. E. Herrera
Affiliation:
Istituto di Fisica Atomica e Molecolare del C.N.R., Via del Giardino, 7 56100 Pisa, Italy.
M. Vaselli
Affiliation:
Istituto di Fisica Atomica e Molecolare del C.N.R., Via del Giardino, 7 56100 Pisa, Italy.
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Abstract

The effect of thermal flux transport inhibition on the coupling of the spherical dense pellet core with the hot electron halo produced at the plasma resonance layer has been investigated. The analytic expressions for the core-corona coupling and the optimum temperature of the overlapping region (at which this coupling is maximum) have been derived as a function of ‘flux limit’ parameter and the laser wavelength. Relevant calculations indicate that the core-corona coupling is sensitive to the mean electron temperature and the scaling of its maximum value with the laser wavelength remains absolutely unaffected by plasma ablation. The subsequent results on laser wavelength scaling are compared and contrasted with the predictions of other investigations. The heat transfer from the hot electron cloud to the dense core can be increased by an order of magnitude in case of the uninhibited flux.

Type
Research Article
Information
Laser and Particle Beams , Volume 7 , Issue 1 , February 1989 , pp. 111 - 117
Copyright
Copyright © Cambridge University Press 1989

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