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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},
}