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3篇 您的检索式:作者名="N.Nissim"
    题名 作者 年代 出处 被引量
1Avalanche boron fusion by laser picosecond block ignition with magnetic trapping for clean and economic reactor显示文摘Measured highly elevated gains of proton–boron(HB11) fusion(Picciotto et al., Phys. Rev. X 4, 031030(2014))confirmed the exceptional avalanche reaction process(Lalousis et al., Laser Part. Beams 32, 409(2014); Hora et al.,Laser Part. Beams 33, 607(2015)) for the combination of the non-thermal block ignition using ultrahigh intensity laser pulses of picoseconds duration. The ultrahigh acceleration above 10^(20) cm s^(-2)for plasma blocks was theoretically and numerically predicted since 1978(Hora, Physics of Laser Driven Plasmas(Wiley, 1981), pp. 178 and 179) and measured(Sauerbrey, Phys. Plasmas 3, 4712(1996)) in exact agreement(Hora et al., Phys. Plasmas 14, 072701(2007)) when the dominating force was overcoming thermal processes. This is based on Maxwell's stress tensor by the dielectric properties of plasma leading to the nonlinear(ponderomotive) force f_(NL)resulting in ultra-fast expanding plasma blocks by a dielectric explosion. Combining this with measured ultrahigh magnetic fields and the avalanche process opens an option for an environmentally absolute clean and economic boron fusion power reactor. This is supported also by other experiments with very high HB11 reactions under different conditions(Labaune et al., Nature Commun.4, 2506(2013)).H.Hora G.Korn S.Eliezer N.Nissim P.Lalousis L.Giuffrida D.Margarone A.Picciotto G.H.Miley S.Moustaizis J.-M.Martinez-Val C.P.J.Barty G.J.Kirchhoff 2016High Power Laser Science and Engineering2016,4,4:2
2Free-surface velocity measurements of opaque materials in laser-driven shock-wave experiments using photonic Doppler velocimetry显示文摘We present a novel photonic Doppler velocimetry(PDV)design for laser-driven shock-wave experiments.This PDV design is intended to provide the capability of measuring the free-surface velocity of shocked opaque materials in the terapascal range.We present measurements of the free-surface velocity of gold for as long as∼2 ns from the shock breakout,at pressures of up to∼7 Mbar and a free-surface velocity of 7.3 km/s with an error of∼1.5%.Such laboratory pressure conditions are achieved predominantly at high-intensity laser facilities where the only velocity diagnostic is usually line-imaging velocity interferometry for any reflector.However,that diagnostic is limited by the lower dynamic range of the streak camera(at a temporal resolution relevant to laser shock experiments)to measure the free-surface velocity of opaque materials up to pressures of only∼1 Mbar.We expect the proposed PDV design to allow the free-surface velocity of opaque materials to be measured at much higher pressures.N.Nissim E.Greenberg M.Werdiger Y.Horowitz L.Bakshi Y.Ferber B.Glam A.Fedotov-Gefen L.Perelmutter S.Eliezer 2021Matter and Radiation at Extremes2021,6,4:0
3Physics and applications with laser-induced relativistic shock waves显示文摘The laser-induced relativistic shock waves are described. The shock waves can be created directly by a high irradiance laser or indirectly by a laser acceleration of a foil that collides with a second static foil. A special case of interest is the creation of laser-induced fusion where the created alpha particles create a detonation wave. A novel application is suggested with the shock wave or the detonation wave to ignite a pre-compressed target. In particular, the deuterium–tritium fusion is considered. It is suggested that the collision of two laser accelerated foils might serve as a novel relativistic accelerator for bulk material collisions.S.Eliezer J.M.Martinez-Val Z.Henis N.Nissim S.V.Pinhasi A.Ravid M.Werdiger E.Raicher 2016High Power Laser Science and Engineering2016,4,3:0
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