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

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-11 B 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.

The new possibility of the fusion p +11B chain reaction being induced by intense laser pulses

“…It is interesting also to consider the chain reaction when the mass density of the boron target exceeds solid density by 200 times. Such conditions are realized in nuclear fusion schemes with inertial confinement [36] in the final stages of compression in a spherical target containing thermonuclear fuel. Obviously, the reaction rates increase by the same value so that the start of exponential growth is delayed by up to several nanoseconds.…”

Ultrahigh-density deuterium of Rydberg matter clusters for inertial confinement fusion targets

“…Another fast igniter modification is the side-on ignition of uncompressed DT or of proton-Boron11 fuel (Azizi et al, 2009). This scheme needs the application of a very unique effect discovered only lately (Hora et al, 2002 by applying laser pulses with a very high contrast ratio (cut-off prepulse by a factor 10 8 ) before the main pulse is interacting in order to avoid the otherwise always appearing relativistic self-focusing.…”

The evaluation of transmutation of hazardous nuclear waste of 90Sr, into valuable nuclear medicine of 89Sr by ultraintense lasers

“…The laser-matter interaction meets the high energy physics in laser-plasma accelerators in generating highly collimated bright X/g-ray sources (Giulietti et al, 2005;Chyla, 2006;Bessonov et al, 2008) and the production of thick ion blocks (Glowacz, 2006;Yazdani et al, 2009;Hora, 2009;Azizi et al, 2009;Hora et al, 2009). The laser-matter interaction meets the high energy physics in laser-plasma accelerators in generating highly collimated bright X/g-ray sources (Giulietti et al, 2005;Chyla, 2006;Bessonov et al, 2008) and the production of thick ion blocks (Glowacz, 2006;Yazdani et al, 2009;Hora, 2009;Azizi et al, 2009;Hora et al, 2009).…”