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Collective stopping power in laser driven fusion plasmas for block ignition

Published online by Cambridge University Press:  23 December 2009

B. Malekynia ,
H. Hora ,
N. Azizi ,
M. Kouhi ,
M. Ghoranneviss ,
G.H. Miley  and
X.T. He
B. Malekynia*
Affiliation:
Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran-Poonak, Iran
H. Hora
Affiliation:
University of New South Wales, Sydney, Australia
N. Azizi
Affiliation:
Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran-Poonak, Iran
M. Kouhi
Affiliation:
Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran-Poonak, Iran
M. Ghoranneviss
Affiliation:
Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran-Poonak, Iran
G.H. Miley
Affiliation:
Department of Nuclear, Plasma and Radiological Engineering, University of Illinois, Urbana, Illinois
X.T. He
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, China
*
Address correspondence and reprint requests to: B. Malekynia, Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran. E-mail: b.malekynia@gmail.com
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Abstract

In contrast to the usual laser fusion scheme with spherical irradiation and very high compression and ignition of fuel, the alternative scheme with side-on ignition of uncompressed solid density of fuel (Chu) may lead to a solution by using the now available picosecond laser pulses with higher than petawatt power. A necessary condition is to use clean laser pulses with better than 108 contrast ratio for suppression of relativistic self-focusing. When updating the analysis of Chu for fusion of deuterium-tritium and proton-11B, one problem is that the correct use of the stopping power of the alpha particles had to be solved. Discrepancies are evaluated in view of the stopping power at the low temperature range of the plasmas where the change of the emitted bremsstrahlung is involved.

Keywords

Collective effectsInertial fusionStopping power
Type
Research Article
Information
Laser and Particle Beams , Volume 28 , Issue 1 , March 2010 , pp. 3 - 9
Copyright
Copyright © Cambridge University Press 2010

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