Fusion flame spreading in depth with deuterium–tritium plane fuel density profile for plasma block ignition

doi:10.1088/1674-1056/21/12/125201

Abstract The solid state fuel ignition was given by Chu and Bobin according to the hydrodynamic theory at x=0 qualitatively. A high threshold energy flux density, i.e., E^*=4.3×10¹² J/m², has been reached. Recently, fast ignition by employing clean petawatt-picosecond laser pulses was performed. The anomalous phenomena were observed to be based on suppression of prepulses. The accelerated plasma block was used to ignite deuterium-tritium fuel at solid state density. The detailed analysis of the thermonuclear wave propagation was investigated. Also the fusion conditions at x≠0 layers were clarified by exactly solving hydrodynamic equations for plasma block ignition. In this paper, the applied physical mechanisms are determined for, such as, nonlinear force laser driven plasma blocks, thermonuclear reaction, heat transfer, electron-ion equilibration, stopping power of alpha particles, bremsstrahlung, expansion, density dependence, and fluid dynamics. New ignition conditions may be obtained by using temperature equations, including the density profile that is obtained by continuity equation and expansion velocity. The density is only a function of x and independent of time. The ignition energy flux density, E_t^*, for the x≠0 layers is 1.95×10¹² J/m². Thus threshold ignition energy in comparison with that at x=0 layers would be reduced to less than 50 percent.

Keywords: plasma block solid state fuel ignition expansion velocity

Received: 12 March 2012
Revised: 07 August 2012
Accepted manuscript online:

PACS:	52.38.-r	(Laser-plasma interactions)
	52.38.Dx	(Laser light absorption in plasmas (collisional, parametric, etc.))
	52.30.Ex	(Two-fluid and multi-fluid plasmas)
	52.57.-z	(Laser inertial confinement)

Fund: Project supported by the Fund from Islamic Azad University of Gachsaran Branch of Iran.

Corresponding Authors: B. Malekynia
E-mail: b_malekynia@iaug.ac.ir

Cite this article:

B. Malekynia, S. S. Razavipour Fusion flame spreading in depth with deuterium–tritium plane fuel density profile for plasma block ignition 2012 Chin. Phys. B 21 125201

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Fusion flame spreading in depth with deuterium–tritium plane fuel density profile for plasma block ignition

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