Highly efficient generation of ultraintense high-energy ion beams using laser-induced cavity pressure acceleration

Badziak, J.; Jabłoński, S.; Ra̧czka, Piotr A.

doi:10.1063/1.4746287

Cited by 11 publications

(17 citation statements)

References 26 publications

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“…As it results from our numerical simulations, 17,18 when the intensity and the energy fluence of a laser beam are wellmatched to the projectile's areal mass density, the LICPA accelerator (both the hydrodynamic and the photon-pressure) can produce fast projectiles in the form of compact plasma objects of density comparable to the solid density. Hereafter, such projectiles will be referred to as plasma macro-particles or, in short, as macro-particles.…”

Section: The Ideamentioning

confidence: 58%

“…In the hydrodynamic regime, which takes place at relatively low laser intensities (<10 17 W/cm 2 ) and moderately long (>10 À11 s) laser pulses, the projectile is accelerated by the hydrodynamic pressure of hot plasma confined in the cavity, and the projectile velocity is limited to a few 10 8 cm/s. 17 In the photon-pressure regime, which occurs at very high laser intensities (>10 20 W/cm 2 ) and short (<10 À11 s) laser pulses, possibly of circular polarization, the projectile is driven by the radiation pressure of the laser pulse circulating inside the cavity and can be accelerated up to near-relativistic ($10 10 cm/s) 17,18 or even relativistic velocities. 19,20 By collision of such projectiles with a solid target 20 or by a direct irradiation of the target with a laser beam of intensity $10 24 W/cm 2 (Ref.…”

Section: The Ideamentioning

confidence: 99%

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Generation of ultra-high-pressure shocks by collision of a fast plasma projectile driven in the laser-induced cavity pressure acceleration scheme with a solid target

et al. 2015

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A novel, efficient method of generating ultra-high-pressure shocks is proposed and investigated. In this method, the shock is generated by collision of a fast plasma projectile (a macro-particle) driven by laser-induced cavity pressure acceleration (LICPA) with a solid target placed at the LICPA accelerator channel exit. Using the measurements performed at the kilojoule PALS laser facility and two-dimensional hydrodynamic simulations, it is shown that the shock pressure $ Gbar can be produced with this method at the laser driver energy of only a few hundred joules, by an order of magnitude lower than the energy needed for production of such pressure with other laserbased methods known so far. V C 2015 AIP Publishing LLC. [http://dx.

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Section: The Ideamentioning

confidence: 58%

Section: The Ideamentioning

confidence: 99%

Generation of ultra-high-pressure shocks by collision of a fast plasma projectile driven in the laser-induced cavity pressure acceleration scheme with a solid target

et al. 2015

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“…Fairly impressive progress has also been made in the development of laser-driven ultraintense proton/ion sources for FI. In particular, the methods of highly efficient (η prod > 10-20%) generation of proton/ion beams of parameters required for FI have been proposed and investigated experimentally or with the use of advanced computer codes [4,6,23].…”

Section: Central Hot Spot Ignition Schemementioning

confidence: 99%

Laser nuclear fusion: current status, challenges and prospect

Badziak¹

2012

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. In 2009, in Lawrence Livermore National Laboratory, USA, National Ignition Facility (NIF) -the largest thermonuclear fusion device ever made was launched. Its main part is a multi-beam laser whose energy in nanosecond pulse exceeds 1MJ (10 6 J). Its task is to compress DT fuel to the density over a few thousand times higher than that of solid-state DT and heat it to 100 millions of K degrees. In this case, the process of fuel compression and heating is realized in an indirect way -laser radiation (in UV range) is converted in the so-called hohlraum (1 cm cylinder with a spherical DT pellet inside) into very intense soft X radiation symmetrically illuminating DT pellet. For the first time ever, the fusion device's energetic parameters are sufficient for the achieving the ignition and self-sustained burn of thermonuclear fuel on a scale allowing for the generation of energy far bigger than that delivered to the fuel.The main purpose of the current experimental campaign on NIF is bringing about, within the next two-three years, a controlled thermonuclear 'big bang' in which the fusion energy will exceed the energy delivered by the laser at least ten times. The expected 'big bang' would be the culmination of fifty years of international efforts aiming at demonstrating both physical and technical feasibility of generating, in a controlled way, the energy from nuclear fusion in inertial confined plasma and would pave the way for practical realization of the laser-driven thermonuclear reactor.This paper briefly reviews the basic current concepts of laser fusion and main problems and challenges facing the research community dealing with this field. In particular, the conventional, central hot spot ignition approach to laser fusion is discussed together with the more recent ones -fast ignition, shock ignition and impact ignition fusion. The research projects directed towards building an experimental laser-driven thermonuclear reactor are presented as well.

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“…The ion acceleration mechanism which ensures a high n i value and can potentially produce beams of low energetic and angular dispersion and also can be effective for both thin and relatively thick ( ∼ micrometer) targets is the SLPA/RPA mechanism. Generation of ultra-intense ion beams by this mechanism can be especially efficient in the recently proposed new scheme of acceleration called laser-induced cavity pressure acceleration (LICPA) (31)(32)(33). However, for currently available laser intensities ( < 10 22 W/cm 2 ), both in the conventional SLPA/RPA scheme and in the LICPA scheme the TNSA mechanism can contribute to the ion acceleration process.…”

Section: Introductionmentioning

confidence: 99%

Generation of ultra-intense ion beams by a short-pulse laser

Badziak

2015

Radiation Effects and Defects in Solids

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This paper summarizes briefly the main experimental and numerical results of the IPPLM team studies on the generation of ultra-intense ion beams by a short ( ≤ 1 ps) laser pulse. Basic laser-driven ion acceleration schemes capable of generating such ion beams are described including the target normal sheath acceleration (TNSA) scheme, the skin-layer ponderomotive acceleration (SLPA) scheme and the laserinduced cavity pressure acceleration (LICPA) scheme. It is shown that an efficient way for achieving high ion beam intensities and fluencies lies in using a short-wavelength laser driver of circular light polarization. In such a case, SLPA clearly dominates over TNSA, and dense and compact ion bunch is generated with high energetic efficiency. The LICPA scheme operating in the photon (radiation) pressure regime can be even more efficient than SLPA. As it is demonstrated by particle-in-cell simulations, the LICPA accelerator with a picosecond, circularly polarized laser driver of intensity ∼ 10 21 W/cm 2 can produce sub-picosecond light ion beams of intensity ∼ 10 22 W/cm 2 and fluence > 1 GJ/cm 2 with the energetic efficiency of tens of percent. Laser-driven ion beams of such extreme parameters could open up new research areas in high-energy-density science, inertial fusion or nuclear physics.

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Highly efficient generation of ultraintense high-energy ion beams using laser-induced cavity pressure acceleration

Cited by 11 publications

References 26 publications

Generation of ultra-high-pressure shocks by collision of a fast plasma projectile driven in the laser-induced cavity pressure acceleration scheme with a solid target

Generation of ultra-high-pressure shocks by collision of a fast plasma projectile driven in the laser-induced cavity pressure acceleration scheme with a solid target

Laser nuclear fusion: current status, challenges and prospect

Generation of ultra-intense ion beams by a short-pulse laser

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