Topic/Type: 1.2 Fusion Plasmas (magnetic & inertial confinement), Poster

Threshold for laser driven block ignition for fusion energy from helium3- helium3

N. Azizi1, H.Hora2, G.H. Miley3, B. Malekynia4, M. Ghoranneviss4, X. He5

1 IAUKB,Islamic Azad University Khoy Branch ,Khoy,Iran.
2 UNSW,University of New South Wales, Sydney 2052, Australia.
3 DNPRE,Department of Nuclear, Plasma and Radiological Engineering, University of Illinois, Urbana, Illinois 61801, USA.
4 PPRC,Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran-Poonak, Iran.
5 IAPCM,Institute of Applied Physics and Computational Mathematics, Beijing, China.

Controlled fusion energy from burning helium3 with helium3 is of interest because no neutrons are produced. Following the scheme of ignition by spherical irradiation by laser or particle beams is extremely difficult. 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 by Chu (1972). We present the extension for He3-He3 resulting in a very less dramatic difference to H-B11 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 80 keV are no problem for the skin layer acceleration by nonlinear forces (SLANF) for the block generation.

[1] Azizi, N., Hora, H., Miley, G.H., Malekynia, B., Ghoranneviss,M. & He, .T. (2009). Threshold for laser driven block ignition for fusion energy from hydrogen -bron-11. Laser Part. Beams 27, 201?205.