Ion beam requirements for fast ignition of inertial fusion targets

Honrubia, J. J.; Murakami, M.

doi:10.1063/1.4905904

Cited by 22 publications

(13 citation statements)

References 47 publications

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“…Such high currents and current densities more than meet the requirement for the fast ignition of laser fusion or heavy-ion fusion. The Carbon ion energy of 390 MeV is also close to the optimized ion energy per nucleus for fast ignition 28 44 .…”

Section: Discussionmentioning

confidence: 59%

“…The dense block of well-collimated quasi-monoenergetic ions produced with our route is interesting for the creation of astrophysical-like high energy density conditions 8 41 , as well as high pressure materials science 42 . More importantly, it may be applied in the fast ignition of inertial confinement fusion due to the presence of the Bragg peak for monoenergetic ion beams 1 2 6 28 43 44 . As the ion charge density reaches 10 4 Coulomb/cm 3 , the current and current density of this energetic ion block is about 50 MA and 10 14 A/cm 2 , respectively.…”

Section: Discussionmentioning

confidence: 99%

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Dense blocks of energetic ions driven by multi-petawatt lasers

Weng

Liu

Sheng

et al. 2016

Sci Rep

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Laser-driven ion accelerators have the advantages of compact size, high density, and short bunch duration over conventional accelerators. Nevertheless, it is still challenging to simultaneously enhance the yield and quality of laser-driven ion beams for practical applications. Here we propose a scheme to address this challenge via the use of emerging multi-petawatt lasers and a density-modulated target. The density-modulated target permits its ions to be uniformly accelerated as a dense block by laser radiation pressure. In addition, the beam quality of the accelerated ions is remarkably improved by embedding the target in a thick enough substrate, which suppresses hot electron refluxing and thus alleviates plasma heating. Particle-in-cell simulations demonstrate that almost all ions in a solid-density plasma of a few microns can be uniformly accelerated to about 25% of the speed of light by a laser pulse at an intensity around 1022 W/cm2. The resulting dense block of energetic ions may drive fusion ignition and more generally create matter with unprecedented high energy density.

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Section: Discussionmentioning

confidence: 59%

Section: Discussionmentioning

confidence: 99%

Dense blocks of energetic ions driven by multi-petawatt lasers

Weng

Liu

Sheng

et al. 2016

Sci Rep

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“…in [110,111], using the parameters of TNSA ions. The problem to overcome in this approach is not the required energy of the protons, which is in the 10-20 MeV range, but the very high number of particle required to heat the hot spot (which translates in laser pulses energies up to ~100 KJ, considering reported laser-to-proton conversion efficiencies [111]). More recent work has considered ignition using RPA accelerated carbon ions or ions accelerated ponderomotively via Hole Boring acceleration.…”

Section: Proton Fast Ignitionmentioning

confidence: 99%

Ion Acceleration: TNSA and Beyond

Borghesi

2019

Springer Proceedings in Physics

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This paper reviews experimental progress in laser-driven ion acceleration as well as discussing some of the current and foreseen applications employing laser-accelerated beams of ions. While sheath acceleration processes initiated by high-intensity irradiation of solid foils (the so-called target Normal Sheath Acceleration, TNSA) have now been studied for more than two decades, novel processes which can accelerate ions from the bulk of the irradiated target have emerged more recently. We will summarize the basic physics behind all these mechanisms, as well as briefly reporting current experimental evidence.

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“…2006; Mackinnon et al. 2006; Daido, Nishiuchi & Pirozhkov 2012; Honrubia & Murakami 2015) including ion beam therapy (Malka et al. 2004).…”

Section: Introductionmentioning

confidence: 99%

Radiation pressure acceleration of protons from structured thin-foil targets

Meinhold

Kumar

2021

J. Plasma Phys.

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The process of radiation pressure acceleration (RPA) of ions is investigated with the aim of suppressing the Rayleigh–Taylor-like transverse instabilities in laser–foil interaction. This is achieved by imposing surface and density modulations on the target surface. We also study the efficacy of RPA of ions from density modulated and structured targets in the radiation dominated regime where the radiation reaction effects are important. We show that the use of density modulated and structured targets and the radiation reaction effects can help in achieving the twin goals of high ion energy (in GeV range) and lower energy spread.

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Ion beam requirements for fast ignition of inertial fusion targets

Cited by 22 publications

References 47 publications

Dense blocks of energetic ions driven by multi-petawatt lasers

Dense blocks of energetic ions driven by multi-petawatt lasers

Ion Acceleration: TNSA and Beyond

Radiation pressure acceleration of protons from structured thin-foil targets

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