Compact cryogenic source of periodic hydrogen and argon droplet beams for relativistic laser-plasma generation

Fraga, R. A. Costa; Kalinin, Anton; Kühnel, Matthias; Hochhaus, D. C.; Schottelius, Alexander; Polz, J.; Kaluza, Malte C.; Neumayer, P.; Grisenti, R. E.

doi:10.1063/1.3681940

Cited by 20 publications

(13 citation statements)

References 31 publications

(39 reference statements)

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“…Droplet targets have been used for laser-driven ion acceleration as spherical free-standing reduced mass targets (with size of a few ) and are commonly produced by pulsating a liquid jet. Cryogenic systems can be used to produce undercooled droplet targets [119] . The advantage of droplets with respect to wafer-based reduced mass targets is that isolated droplets do not need any stalk or supporting structure which would introduce large perturbations in the electron distribution [91] .…”

Section: Target Needsmentioning

confidence: 99%

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Targets for high repetition rate laser facilities: needs, challenges and perspectives

Prencipe

Fuchs

Pascarelli

et al. 2017

High Pow Laser Sci Eng

126

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2 I. Prencipe et al.Abstract A number of laser facilities coming online all over the world promise the capability of high-power laser experiments with shot repetition rates between 1 and 10 Hz. Target availability and technical issues related to the interaction environment could become a bottleneck for the exploitation of such facilities. In this paper, we report on target needs for three different classes of experiments: dynamic compression physics, electron transport and isochoric heating, and laser-driven particle and radiation sources. We also review some of the most challenging issues in target fabrication and high repetition rate operation. Finally, we discuss current target supply strategies and future perspectives to establish a sustainable target provision infrastructure for advanced laser facilities.

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Section: Target Needsmentioning

confidence: 99%

“…Cryogenic systems can be used to produce undercooled droplet targets [119] . The advantage of droplets with respect to wafer-based reduced mass targets is that isolated droplets do not need any stalk or supporting structure which would introduce large perturbations in the electron distribution [91] .…”

Section: Other Target Typesmentioning

confidence: 99%

Targets for high repetition rate laser facilities: needs, challenges and perspectives

Prencipe

Fuchs

Pascarelli

et al. 2017

High Pow Laser Sci Eng

126

View full text Add to dashboard Cite

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“…to study superfluidity in supercooled media by Grisenti et al [14]. A hydrogen droplet source for application in laser-plasma physics was developed by Costa Frage et al [15]. In the framework of laser-driven particle acceleration Gauthier et al [16,17] used a jet for the purpose of accelerating protons, while a further investigation of the target-geometry dependence was studied by Obst et al [18].…”

Section: Introductionmentioning

confidence: 99%

Study of the parameter dependence of laser-accelerated protons from a hydrogen cluster source

et al. 2020

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We present a study on laser-driven proton acceleration from a hydrogen cluster target. Aiming for the optimisation of the proton source, we performed a detailed parametric scan of the interaction conditions by varying different laser and the target parameters. While the underlying process of a Coulomb-explosion delivers moderate energies, in the range of 100 s of keV, the use of hydrogen as target material comes with the benefit of a debris-free, single-species proton acceleration scheme, enabling high repetition-rate experiments, which are very robust against shot-to-shot fluctuations. OPEN ACCESS RECEIVED

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“…In this paper, we report the successful application of a cryogenic solid hydrogen target 31,32 for laser-driven proton acceleration. Using a Joule-class, 1/40-Hz laser system, we achieved both a high energy conversion efficiency from the laser pulse to the accelerated proton beam and a cutoff-energy in excess of 20 MeV while still exhibiting a rather smooth beam profile.…”

Section: Introductionmentioning

confidence: 99%

Efficient Laser-Driven Proton Acceleration from a Cryogenic Solid Hydrogen Target

Polz

Robinson

Kalinin

et al. 2019

Sci Rep

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We report on the successful implementation and characterization of a cryogenic solid hydrogen target in experiments on high-power laser-driven proton acceleration. When irradiating a solid hydrogen filament of 10 μm diameter with 10-Terawatt laser pulses of 2.5 J energy, protons with kinetic energies in excess of 20 MeV exhibiting non-thermal features in their spectrum were observed. The protons were emitted into a large solid angle reaching a total conversion efficiency of several percent. Two-dimensional particle-in-cell simulations confirm our results indicating that the spectral modulations are caused by collisionless shocks launched from the surface of the the high-density filament into a low-density corona surrounding the target. The use of solid hydrogen targets may significantly improve the prospects of laser-accelerated proton pulses for future applications.

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Compact cryogenic source of periodic hydrogen and argon droplet beams for relativistic laser-plasma generation

Cited by 20 publications

References 31 publications

Targets for high repetition rate laser facilities: needs, challenges and perspectives

Targets for high repetition rate laser facilities: needs, challenges and perspectives

Study of the parameter dependence of laser-accelerated protons from a hydrogen cluster source

Efficient Laser-Driven Proton Acceleration from a Cryogenic Solid Hydrogen Target

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