Domaines
Kinetic theory ; Diffusion ; Long-range interacting systems
Type of internship
Expérimental et théorique Description
Context:
Plasma is a non-linear medium [1], where light waves can couple to plasma waves. There exists a whole range of laser-plasma interaction (LPI) phenomena, from filamentation, stimulated Brillouin scattering (SBS), stimulated Raman scattering (SRS), to cross-talk and braiding between laser beams [2] or cross-beam energy transfer (CBET) [3] between neighbor laser beams. Improving our knowledge of all these effects is not only important from a fundamental perspective, but also from a practical one in the frame of Inertial Confinement Fusion (ICF), where it is critical that as much as possible of the laser energy be transferred homogeneously to the fuel.
Proposed work:
The internship is part of an ongoing effort of investigating laser propagation and LPI in a magnetic field of tens of Tesla [4], both experimentally with high-power lasers worldwide, e.g., LULI2000 (FR) and TITAN (US); and numerically with fully kinetic particle-in-cell simulations performed with the code SMILEI [5] and magnetohydrodynamic (MHD) simulations with the code FLASH [6].
References:
[1] Turnbull, D., et al., PRL 118, 015001 (2017).
[2] Nakatsutsumi, M., et al., Nat. Phys. 6, 1010 (2010).
[3] Michel, P., et al. Phys. Plas. 17, 056305 (2010).
[4] Yao, W., et al. PRL 130, 265101 (2023).
[5] Derouillat, J., et al., Comput. Phys. Commun. 222, 351-373 (2018)
[6] Fryxell, B., et al. The Astrophysical Journal Supplement Series 131.1, 273 (2000)
Contact
Julien Fuchs