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Dense plasma heating by crossing relativistic electron beams
N Ratan1, N J Sircombe1,2,3, L Ceurvorst1
1Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, United Kingdom.
Abstract:
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.
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