Energetic proton generation in ultra-intense laser–solid interactions

Wilks, S. C.; Langdon, A. B.; Cowan, T. E.; Roth, Markus; Singh, M. S.; Hatchett, S.; Key, M.H.; Pennington, D. M.; Mackinnon, A. J.; Snavely, R.

doi:10.1063/1.1333697

Cited by 1,564 publications

(907 citation statements)

References 11 publications

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“…There are two main mechanisms of laser-driven ion acceleration for thin targets (thickness 100 m): the target normal sheat acceleration (TNSA) [1,2,[4][5][6][7][8] and the radiation presure acceleration (RPA) [7,9,10], also known as skin--layer ponderomotive acceleration (SLPA) [2,[11][12][13]. For linear polarization (LP) and moderate laser intensities the dominant acceleration mechanism is usually the TNSA.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations of generation of high-energy ion beams driven by a petawatt femtosecond laser

2015

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Abstract. This contribution presents results of a Particle-in-Cell simulation of ion beam acceleration via the interaction of a petawatt 25 fs laser pulse of high intensity (up to ~10 21 W/cm 2 ) with thin hydrocarbon (CH) and erbium hydride (ErH 3 ) targets of equal areal mass density (of 0.6 g/m 2 ). A special attention is paid to the effect that the laser pulse polarization and the material composition of the target have on the maximum ion energies and the number of high energy (>10 MeV) protons. It is shown that both the mean and the maximum ion energies are higher for the linear polarization than for the circular one. A comparison of the maximum proton energies and the total number of protons generated from the CH and ErH 3 targets using a linearly polarized beam is presented. For the ErH 3 targets the maximum proton energies are higher and they reach 50 MeV for the laser pulse intensity of 10 21 W/cm 2 . The number of protons with energies higher than 10 MeV is an order of magnitude higher for the ErH 3 targets than that for the CH targets.

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Section: Introductionmentioning

confidence: 99%

Numerical simulations of generation of high-energy ion beams driven by a petawatt femtosecond laser

2015

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“…A well-understood and widely-used mechanism for laserbased ion acceleration is the TNSA machanism (target normal sheath acceleration, [10,11]). It is most efficiently used for accelerating protons and shows excellent beam properties with respect to bunch intensity and emittance [12].…”

Section: Introductionmentioning

confidence: 99%

Commissioning of a compact laser-based proton beam line for high intensity bunches around 10 MeV

Busold

Schumacher

Deppert

et al. 2014

Phys. Rev. ST Accel. Beams

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We report on the first results of experiments with a new laser-based proton beam line at the GSI accelerator facility in Darmstadt. It delivers high current bunches at proton energies around 9.6 MeV, containing more than 10 9 particles in less than 10 ns and with tunable energy spread down to 2.7% (ΔE=E 0 at FWHM). A target normal sheath acceleration stage serves as a proton source and a pulsed solenoid provides for beam collimation and energy selection. Finally a synchronous radio frequency (rf) field is applied via a rf cavity for energy compression at a synchronous phase of −90 deg. The proton bunch is characterized at the end of the very compact beam line, only 3 m behind the laser matter interaction point, which defines the particle source.

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“…They can be applied to various aspects such as target normal sheath acceleration of ions [16][17][18][19][20][21] , x/γ -ray emission [22] and generation of MeV-positron beams [23] . Both the cut-off energy and the population can be manipulated by adjusting the length and spatial period of the well-organized structures.…”

Section: Discussionmentioning

confidence: 99%

Exploring novel target structures for manipulating relativistic laser–plasma interaction

Jiang

Pukhov

et al. 2017

High Pow Laser Sci Eng

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The improved laser-to-pedestal contrast ratio enabled by current high-power laser pulse cleaning techniques allows the fine features of the target survive before the main laser pulse arrives. We propose to introduce the nano-fabrication technologies into laser-plasma interaction to explore the novel effects of micro-structures. We found out that not only laser-driven particle sources but also the laser pulse itself can be manipulated by specifically designed micro-cylinder and -tube targets, respectively. The proposal was supported by full-3D particle-in-cell simulations and successful proofof-principle experiments for the first time. We believe this would open a way to manipulate relativistic laser-plasma interaction at the micro-size level.

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Energetic proton generation in ultra-intense laser–solid interactions

Cited by 1,564 publications

References 11 publications

Numerical simulations of generation of high-energy ion beams driven by a petawatt femtosecond laser

Numerical simulations of generation of high-energy ion beams driven by a petawatt femtosecond laser

Commissioning of a compact laser-based proton beam line for high intensity bunches around 10 MeV

Exploring novel target structures for manipulating relativistic laser–plasma interaction

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