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@ARTICLE{Marqus:347474,
author = {Marquès, J. -R. and Lancia, L. and Loiseau, P. and
Forestier-Colleoni, P. and Tarisien, M. and Atukpor, E. and
Bagnoud, V. and Brabetz, C. and Consoli, F. and Domange, J.
and Hannachi, F. and Nicolaï, P. and Salvadori, M. and
Zielbauer, B.},
title = {{C}ollisionless {S}hock {A}cceleration of protons in a
plasma slab produced in a gas jet by the collision of two
laser-driven hydrodynamic shockwaves},
publisher = {arXiv},
reportid = {GSI-2023-00978},
year = {2023},
abstract = {We recently proposed a new technique of plasma tailoring by
laser-driven hydrodynamic shockwaves generated on both sides
of a gas jet [J.-R. Marquès et al., Phys. Plasmas 28,
023103 (2021)]. In the continuation of this numerical work,
we studied experimentally the influence of the tailoring on
proton acceleration driven by a high-intensity
picosecond-laser, in three cases: without tailoring, by
tailoring only the entrance side of the ps-laser, or both
sides of the gas jet. Without tailoring the acceleration is
transverse to the laser axis, with a low-energy exponential
spectrum, produced by Coulomb explosion. When the front side
of the gas jet is tailored, a forward acceleration appears,
that is significantly enhanced when both the front and back
sides of the plasma are tailored. This forward acceleration
produces higher energy protons, with a peaked spectrum, and
is in good agreement with the mechanism of Collisionless
Shock Acceleration (CSA). The spatio-temporal evolution of
the plasma profile was characterized by optical shadowgraphy
of a probe beam. The refraction and absorption of this beam
was simulated by post-processing 3D hydrodynamic simulations
of the plasma tailoring. Comparison with the experimental
results allowed to estimate the thickness and near-critical
density of the plasma slab produced by tailoring both sides
of the gas jet. These parameters are in good agreement with
those required for CSA.},
keywords = {Plasma Physics (physics.plasm-ph) (Other) / Accelerator
Physics (physics.acc-ph) (Other) / FOS: Physical sciences
(Other)},
cin = {PPH},
cid = {I:(DE-Ds200)PPH-20051214OR027},
pnm = {631 - Matter – Dynamics, Mechanisms and Control
(POF4-631)},
pid = {G:(DE-HGF)POF4-631},
experiment = {EXP:(DE-Ds200)P189-20200803},
typ = {PUB:(DE-HGF)25},
doi = {10.48550/ARXIV.2309.16277},
url = {https://repository.gsi.de/record/347474},
}