Development of gas jet targets for laser-plasma experiments at near-critical density

Henares, J. L.; Puyuelo-Valdes, P.; Hannachi, F.; Ceccotti, T.; Ehret, M.; Gobet, F.; Lancia, L.; Marquès, J. R.; Santos, J. J.; Versteegen, M.; Tarisien, M.

doi:10.1063/1.5093613

Cited by 29 publications

(26 citation statements)

References 28 publications

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“…This scheme can be implemented at high repetition rate, in a debris free design. Using present high-density gas jets 33 , it allows the creation of a thin (∼ 10 µm) plasma slab of adjustable density up to 2 × 10 22 cm −3 . The typical lifetime of this transient target is ∼ 100 ps, hence the synchronization with the ps-pulse is easy to perform.…”

Section: Thin Over-critical Plasma Productionmentioning

confidence: 99%

“…This scheme can be implemented at high repetition rate, in a debris free environment. Using present high-density gas jets 33 , it allows the creation of a thin (∼ 10 µm) plasma slab of adjustable density up to 2 × 10 22 cm −3 . The first part of this paper presents a study, based on hydrodynamic and on ion Fokker-Planck simulations, of this plasma tailoring method.…”

Section: Introductionmentioning

confidence: 99%

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Over-critical sharp-gradient plasma slab produced by the collision of laser-induced blast-waves in a gas jet; Application to high-energy proton acceleration

Marquès,

Loiseau,

Bonvalet

et al. 2020

Preprint

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The generation of thin and high density plasma slabs at high repetition rate is a key issue for ultra-high intensity laser applications. We present a scheme to create such plasma slabs, based on the propagation and collision in a gas jet of two counter-propagating blast waves (BW). Each BW is launched by a sudden and local heating induced by a nanosecond laser beam that propagates along the side of the jet. The resulting cylindrical BW expands perpendicular to the beam. The shock front, bent by the gas jet density gradient, pushes and compresses the plasma toward the jet center. By using two parallel ns laser beams, this scheme enables to tailor independently two opposite sides of the jet, while avoiding the damage risks associated with counterpropagating laser beams. A parametric study is performed using two and three dimensional hydrodynamic, as well as kinetic simulations. The BWs bending combined with the collision in a stagnation regime increases the density by more than 10 times and generates a very thin (down to few microns), near to over-critical plasma slab with a high density contrast (> 100), and a lifetime of a few hundred picoseconds. Two dimensional particle-in-cell simulations are used to study the influence of plasma tailoring on proton acceleration by a high-intensity sub-picosecond laser pulse. Tailoring the plasma not only at the entrance but also the exit side of the ps-pulse enhances the proton beam collimation, increases significantly the number of high energy protons, as well as their maximum energy.

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Section: Thin Over-critical Plasma Productionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Over-critical sharp-gradient plasma slab produced by the collision of laser-induced blast-waves in a gas jet; Application to high-energy proton acceleration

Marquès,

Loiseau,

Bonvalet

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

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“…Over the years different schemes for laser-based electron and ion acceleration were proposed, such as laser-wakefield acceleration (LWFA) [6] , target normal sheath acceleration (TNSA) [7] , radiation pressure acceleration (RPA) [8] , and collisionless shock acceleration [9] . Improving laser-matter coupling in each of these mechanisms requires specific and delicate target design, such as specially designed gas jets, mass-limited and nanostructured solid targets [10][11][12] . A particularly promising ion acceleration scheme is one whereby a high-intensity laser interacts with a structured dynamic plasma target [13] .…”

Section: Introductionmentioning

confidence: 99%

Control of amorphous solid water target morphology induced by deposition on a charged surface

Bespaly

Dey²,

Papeer³

et al. 2021

High Pow Laser Sci Eng

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Microstructured targets demonstrate an enhanced coupling of high-intensity laser pulse to a target and play an important role in laser-induced ion acceleration. Here we demonstrate an approach that enables us to control the morphology of amorphous solid water (ASW) microstructured targets, by deposition of water vapor on a charged substrate, cooled down to 100 K. The morphology of the deposited ASW structures is controlled by varying the surface charge on the substrate and the pressure of water vapor. The obtained target is structured as multiple, dense spikes, confined by the charged area on the substrate, with increased aspect ratio of up to 5:1 and having a diameter comparable with the typical spot size of the laser focused onto the target.

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“…Gas targets are naturally easier to refresh. High-energy ion beams resulting from collisionless shockwaves induced in nearly critical gas targets were demonstrated by either using long-wavelength laser pulses [23] or with very high-density gas [12,[24][25][26]. Tailoring the plasma profile around a solid foil target to enhance the emission of TNSA ions was also recently investigated [27].…”

Section: Introductionmentioning

confidence: 99%

Optically Switchable MeV Ion/Electron Accelerator

et al. 2021

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The versatility of laser accelerators in generating particle beams of various types is often promoted as a key applicative advantage. These multiple types of particles, however, are generated on vastly different irradiation setups, so that switching from one type to another involves substantial mechanical changes. In this letter, we report on a laser-based accelerator that generates beams of either multi-MeV electrons or ions from the same thin-foil irradiation setup. Switching from generation of ions to electrons is achieved by introducing an auxiliary laser pulse, which pre-explodes the foil tens of ns before irradiation by the main pulse. We present an experimental characterization of the emitted beams in terms of energy, charge, divergence, and repeatability, and conclude with several examples of prospective applications for industry and research.

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Development of gas jet targets for laser-plasma experiments at near-critical density

Cited by 29 publications

References 28 publications

Over-critical sharp-gradient plasma slab produced by the collision of laser-induced blast-waves in a gas jet; Application to high-energy proton acceleration

Over-critical sharp-gradient plasma slab produced by the collision of laser-induced blast-waves in a gas jet; Application to high-energy proton acceleration

Control of amorphous solid water target morphology induced by deposition on a charged surface

Optically Switchable MeV Ion/Electron Accelerator

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