TY - JOUR
T1 - Laser-plasma proton acceleration with a combined gas-foil target
AU - Levy, Dan
AU - Bernert, Constantin
AU - Rehwald, Martin
AU - Andriyash, Igor A.
AU - Assenbaum, Stefan
AU - Kluge, Thomas
AU - Kroupp, Eyal
AU - Obst-Huebl, Lieselotte
AU - Pausch, Richard
AU - Schulze-Makuch, Alexander
AU - Zeil, Karl
AU - Schramm, Ulrich
AU - Malka, Victor
N1 - We thank the DRACO laser team for their excellent support. The project was pursued in the framework of the Weizmann Helmholtz Laboratory for Laser Matter Interaction (WHELMI) and partially supported by Horizon 2020 Laserlab Europe V (PRISES) under contract no. 871124, as well as by The Israel Science Foundation (under contracts 666/17 and 711/17), Minerva (under contract 712590) and the Alexander von Humboldt Foundation.
PY - 2020/10
Y1 - 2020/10
N2 - Laser-plasma proton acceleration was investigated in the target normal sheath acceleration regime with a target composed of a gas layer and a thin foil. The laser's shape, duration, energy and frequency are modified as it propagates in the gas, altering the laser-solid interaction leading to proton acceleration. The modified properties of the laser were assessed by both numerical simulations and by measurements. The 3D particle-in-cell simulations have shown that a nearly seven-fold increase in peak intensity at the foil plane is possible. In the experiment, maximum proton energies showed high dependence on the energy transmission of the laser through the gas and a lesser dependence on the size and shape of the pulse. At high gas densities, where high intensity was expected, laser energy depletion and pulse distortion suppressed proton energies. At low densities, with the laser focused far behind the foil, self-focusing was observed and the gas showed a positive effect on proton energies. The promising results of this first exploration motivate further study of the target.
AB - Laser-plasma proton acceleration was investigated in the target normal sheath acceleration regime with a target composed of a gas layer and a thin foil. The laser's shape, duration, energy and frequency are modified as it propagates in the gas, altering the laser-solid interaction leading to proton acceleration. The modified properties of the laser were assessed by both numerical simulations and by measurements. The 3D particle-in-cell simulations have shown that a nearly seven-fold increase in peak intensity at the foil plane is possible. In the experiment, maximum proton energies showed high dependence on the energy transmission of the laser through the gas and a lesser dependence on the size and shape of the pulse. At high gas densities, where high intensity was expected, laser energy depletion and pulse distortion suppressed proton energies. At low densities, with the laser focused far behind the foil, self-focusing was observed and the gas showed a positive effect on proton energies. The promising results of this first exploration motivate further study of the target.
U2 - https://doi.org/10.1088/1367-2630/abbf6d
DO - https://doi.org/10.1088/1367-2630/abbf6d
M3 - مقالة
SN - 1367-2630
VL - 22
JO - New Journal of Physics
JF - New Journal of Physics
IS - 10
M1 - 103068
ER -