Radiation pressure acceleration of ultrathin foils

Macchi, Andrea; Veghini, Silvia; Liseykina, T. V.; Пегораро, Ф.

doi:10.1088/1367-2630/12/4/045013

Cited by 130 publications

(110 citation statements)

References 38 publications

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“…As shown in the Fig. 4(d), the experimental data agrees well with the ion energy estimated by a simple rigid model for RPA-LS mechanism [18,19]. As expected for the non-relativistic case, the ion energy is seen to scale as (a 0 2τ p /χ) 2 .…”

Section: Recent Results and Scaling Laws Towards The Radiation Pressusupporting

confidence: 84%

Laser-ion accelerators: State-of-the-art and scaling laws

Borghesi¹,

Kar²,

Margarone

2013

AIP Conference Proceedings

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Abstract. A significant amount of experimental work has been devoted over the last decade to the development and optimization of proton acceleration based on the so-called Target Normal Sheath acceleration mechanism. Several studies have been dedicated to the determination of scaling laws for the maximum energy of the protons as a function of the parameters of the irradiating pulses, studies based on experimental results and on models of the acceleration process. We briefly summarize the state of the art in this area, and review some of the scaling studies presented in the literature. We also discuss some recent results, and projected scalings, related to a different acceleration mechanism for ions, based on the Radiation Pressure of an ultraintense laser pulse.

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Section: Recent Results and Scaling Laws Towards The Radiation Pressusupporting

confidence: 84%

Laser-ion accelerators: State-of-the-art and scaling laws

Borghesi¹,

Kar²,

Margarone

2013

AIP Conference Proceedings

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“…11,12,35,36 Each foil cell contains 400 simulation particles. Absorbing boundary conditions are used for both the electromagnetic fields and the simulation particles.…”

Section: Multistaged Acceleration Of Thin Foilmentioning

confidence: 99%

High-energy monoenergetic protons from multistaged acceleration of thin double-layer target by circularly polarized laser

Zhang

Sheng

et al. 2011

Physics of Plasmas

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Multistaged acceleration of solid-density thin foils by ultraintense circularly polarized laser pulse is investigated. A stable radiation pressure acceleration (RPA) stage is first established. Higher dimensional effects such as transverse instabilities and enhanced electron heating then gradually make the initially opaque foil transparent to the laser light. Accordingly, the dominant acceleration mechanism changes smoothly from RPA to target normal sheath acceleration (TNSA). The transition can therefore enhance the maximum energy of the accelerated ions but broaden their energy spectrum. For a double-layer target, however, the light ions (protons) in the backlayer can be efficiently accelerated in the RPA and TNSA regimes nearly monoenergetically. Two-dimensional particle-in-cell simulations show that with this scheme a circularly polarized laser pulse of peak intensity 3.9×1022 W/cm2 can produce a collimated proton bunch that persists for many Rayleigh lengths and its peak energy can reach 4.2 GeV with FWHM of 200 MeV.

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“…Experiments, currently exploiting micrometer foil targets for target normal sheath acceleration (TNSA) [6] , provide a world record of maximum proton energy beyond 85 MeV [7] . With nm thin foils, novel acceleration mechanisms such as radiation pressure acceleration (RPA) [8][9][10][11][12][13][14] and breakout afterburner (BOA) [15,16] have already demonstrated a higher conversion efficiency and faster energy scaling which are in favor for potential applications [17] .…”

Section: Introductionmentioning

confidence: 99%

An automated, 0.5 Hz nano-foil target positioning system for intense laser plasma experiments

Gao

Haffa

et al. 2017

High Pow Laser Sci Eng

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We report on a target system supporting automated positioning of nano-targets with a precision resolution of 4 µm in three dimensions. It relies on a confocal distance sensor and a microscope. The system has been commissioned to position nanometer targets with 1 Hz repetition rate. Integrating our prototype into the table-top ATLAS 300 TW-laser system at the Laboratory for Extreme Photonics in Garching, we demonstrate the operation of a 0.5 Hz laser-driven proton source with a shot-to-shot variation of the maximum energy about 27% for a level of confidence of 0.95. The reason of laser shooting experiments operated at 0.5 Hz rather than 1 Hz is because the synchronization between the nano-foil target positioning system and the laser trigger needs to improve.

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Radiation pressure acceleration of ultrathin foils

Cited by 130 publications

References 38 publications

Laser-ion accelerators: State-of-the-art and scaling laws

Laser-ion accelerators: State-of-the-art and scaling laws

High-energy monoenergetic protons from multistaged acceleration of thin double-layer target by circularly polarized laser

An automated, 0.5 Hz nano-foil target positioning system for intense laser plasma experiments

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