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Inhibition factor reduces fast ignition threshold for laser fusion using nonlinear force driven block acceleration

Published online by Cambridge University Press:  01 April 2008

M. Ghoranneviss ,
B. Malekynia ,
H. Hora ,
G.H. Miley  and
X. He
M. Ghoranneviss
Affiliation:
Plasma Physics Research Centre, Science and Research Division, Islamic Azad University, Tehran-Poonak, Iran
B. Malekynia
Affiliation:
Plasma Physics Research Centre, Science and Research Division, Islamic Azad University, Tehran-Poonak, Iran
H. Hora*
Affiliation:
Department of Theoretical Physics, University of New South Wales, Sydney, Australia
G.H. Miley
Affiliation:
Department of Nuclear, Plasma and Radiological Engineering, University of Illinois, Urbana, Illinois
X. He
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, China
*
Address correspondence and reprint requests to: Heinrich Hora, Department of Theoretical Physics, University of New South Wales, Sydney 2052, Australia. E-mail: h.hora@unsw.edu.au
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Abstract

Fast ignition for fusion energy by using petawatt-picosecond (PW-ps) laser pulses was modified due to an anomaly based on extremely clean suppression of prepulses. The resulting plasma blocks with space charge neutral ion current densities above 1011 Amp/cm2 may be used to ignite deuterium-tritium at densities at or little above solid state density. The difficulty is to produce extremely high energy flux densities of the blocks. Results are reported how the threshold can be reduced by a factor up to fife if the inhibition factor for thermal conductivity due to electric double layers is included in the hydrodynamic analysis.

Keywords

Fast igniterFusion EnergyLaser Driven ICFLaser driven very high ion densitiesPlasma block (piston) ignition of deuterium-tritiumSelf-focusing
Type
Research Article
Information
Laser and Particle Beams , Volume 26 , Issue 1 , March 2008 , pp. 105 - 112
Copyright
Copyright © Cambridge University Press 2008

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