N Ratan, N J Sircombe, L Ceurvorst, J Sadler, M F Kasim, J Holloway, M C Levy, R Trines, R Bingham, P A Norreys
Here we investigate, using relativistic fluid theory and Vlasov-Maxwell simulations, the local heating of a dense plasma by two crossing electron beams. Heating occurs as an instability of the electron beams drives Langmuir waves, which couple nonlinearly into damped ion-acoustic waves. Simulations show a factor 2.8 increase in electron kinetic energy with a coupling efficiency of 18%. Our results support applications to the production of warm dense matter and as a driver for inertial fusion plasmas.
January 2017: Physical Review. E