CmPA, Department of Mathematics, KU Leuven, Leuven, Belgium Laser-driven electrostatic shocks have attracted a considerable interest over the past few years due to
their potentiality for producing highly energetic and quasi-monochromatic ion beams [1, 2, 3, 4]. In this
seminar, the possibility to excite these non-linear waves in near-critical density targets is explored via
multidimensional particle-in-cell simulations. The importance of the plasma density profile in reducing
the energy spread of the beam is analysed and new target configurations are proposed . The generation
of shocks in under-dense plasmas will be also examined and simulation results will be connected to
recent experimental outcomes . Finally, it will be shown how this type of shocks, which are relatively
easy to obtain in the laboratory, can provide an insight over phenomena pervasive in astrophysics, as the
interaction among collisionless shocks and the electron Weibel instability .
 L. O. Silva et al., Phys. Rev. Lett. 92, 015002 (2004).
 D. Haberberger et al., Nat. Phys. 8, 95 (2012).
 F. Fiuza et al., Phys. Rev. Lett. 109, 215001 (2012).
 F. Fiuza et al., Phys. of Plasmas 20, 056304 (2013).
 E. Boella et al., arXiv preprint, arXiv:1709.04098 (2017).
 P. Antici et al., Sci. Rep. 7, 16463 (2017).
 E. Boella et al., arXiv preprint, arXiv:1709.05908 (2017).
N6115, seminar room, Fysik Origo, Fysik
16 January, 2018, 13:30
16 January, 2018, 14:30