Optimized boron fusion with magnetic trapping by laser driven plasma block initiation at nonlinear forced driven ultrahigh acceleration

Abstract

Fusion reactions of solid density boron-11 with protons after initiation of a fusion flame by very powerful picosecond laser pulses were derived for plane geometry. The problem of lateral energy losses with laser beams was solved by using spherical geometry, where however the gains are limited. The other elimination of losses now available by cylinderaxis symmetric 10 kilotesla magnetic fields is possible needing laser powers in the exawatt range. Estimations are presented by varying parameters for reducing the necessary laser pulse powers to lower values by up to a factor 100.

Fusion energy using avalanche increased boron reactions for block-ignition by ultrahigh power picosecond laser pulses

“…2014b;2015) and evaluated now in more details, with the results of >PW-ps laser-driven block ignition (Hora et al, 2010;Lalousis et al, 2014) was leading to a first step of producing ultraclean GJ fusion energy possibly by 30 kJ laser irradiation. Cylindrical magnetic trapping with ultrahigh magnetic fields in the 10 kT range is necessary.…”

Avalanche boron fusion by laser picosecond block ignition with magnetic trapping for clean and economic reactor

“…[10] are collected in Ref. [40] as figures, where 10.13 to 10.23 for laser pulses of picosecond duration and 10 20 W cm −2 for laser intensity by block ignition as described in the preceding section.…”

Extreme laser pulses for possible development of boron fusion power reactors for clean and lasting energy

“…4 is the confirmation of the avalanche HB11 reaction in plasmas. The initial computations [40] used the long expected but not sufficiently confirmed amplification of the reaction by subsequent multiplication from the three generated alpha particles which themselves may generate subsequently a maximum of further three reactions etc. as avalanche.…”

“…Simplified estimations [70] indicated this possibility more substantially than the earlier assumed qualitative expectations. The publication of the computations [40] was just at the same time as the generation of one billion HB11 reactions [39] by irradiating 500 Joule laser pulses of 200 ps duration on extremely boron enriched silicon targets used in semiconductor studies [71]. The comparison with fusion gains of DT [57][58] permitted [42] the proof of the avalanche mechanism at plane geometry [53] [72] and was supported [73] by the evaluation of the elastic collisions and an subsequent reactions of HB11 within the background plasma of more than 10 eV temperature of solid state density [38][73][74] [75].…”