Pump depletion and hot electron generation in long density scale length plasma with shock ignition high intensity laser
Plasma Physics
2020-03-25 v2
Abstract
Two-dimension Particle-in-cell simulations for laser plasma interaction with laser intensity of , plasma density range of 0.01-0.28 and scale length of showed significant pump depletion of the laser energy due to stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) in the low density region (). The simulations identified hot electrons generated by SRS in the low density region with moderate energy and by two-plasmon-decay (TPD) near with higher energy. The overall hot electron temperature (46 keV) and conversion efficiency (3%) were consistent with the experiment measurements. The simulations also showed artificially reducing SBS would lead to stronger SRS and a softer hot electron spectrum.
Keywords
Cite
@article{arxiv.1910.12323,
title = {Pump depletion and hot electron generation in long density scale length plasma with shock ignition high intensity laser},
author = {J. Li and S. Zhang and C. M. Krauland and H. Wen and F. N. Beg and C. Ren and M. S. Wei},
journal= {arXiv preprint arXiv:1910.12323},
year = {2020}
}