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Threshold for laser driven block ignition for fusion energy from hydrogen boron-11

Published online by Cambridge University Press:  23 March 2009

N. Azizi ,
H. Hora ,
G.H. Miley ,
B. Malekynia ,
M. Ghoranneviss  and
X. He
N. Azizi
Affiliation:
Plasma Physics Research Center, Science and Research Branch, 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
B. Malekynia
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
X. He
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, China
*
Address correspondence and reprint requests to: H. Hora, Department of Theoretical Physics, University of New South Wales, Sydney 2052, Australia. E-mail: [email protected]
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Abstract

Controlled fusion energy from burning hydrogen with boron-11 is of interest because no neutrons are produced. Following the scheme of ignition by spherical irradiation by laser or particle beams, one has to deal with exorbitant conditions of densities and input energies. A new approach following the scheme of block ignition with laser pulses of picosecond (ps) duration and more than petawatt (PW) power led to the possibility of plane geometry irradiation of the fuel using the anomalous effect of block ignition for deuterium tritium (DT) based on updated conditions for the initial computations. We present the extension for H-11B resulting in a very less dramatic difference to DT than in the case of spherical pellet geometry. Ignition thresholds may be only about one order of magnitude higher and the needed temperatures of about 50 keV are no problem for the skin layer acceleration by nonlinear forces (SLANF) for the block generation.

Keywords

Fast ignitionHydrogen-boron(11) fusionLaser driven fusion energyNeutron-lean fusion energyNonlinear (ponderomotive) forcesPetawatt laser pulsesSkin layer acceleration
Type
Research Article
Information
Laser and Particle Beams , Volume 27 , Issue 2 , June 2009 , pp. 201 - 206
Copyright
Copyright © Cambridge University Press 2009

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Footnotes

Presentation at the Thirtieth European Conference on Laser Interaction with Matter, Darmstadt, Germany, 31 August–5 September 2008.

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