Simulation of subpicosecond laser-plasma X-ray radiation source
Sedov M.V. 1, Ryazantsev S.N 1,2, Pikuz S.A. 1,2
1Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia
2National Research Nuclear University “MEPhI”, Moscow, Russia
Email: sedov_max@mail.ru, ryazantsev@ihed.ras.ru, spikuz@gmail.com

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The issue of optimizing laser-plasma X-ray sources is still relevant. In this context, numerical simulation methods are very effective. A series of 2d PIC calculations using the EPOCH code were carried out. The laser pulse duration was 0.7 ps, the peak intensity was 3· 1020 W/cm2, and silicon foil between 2 and 5 μm thick was used as a target. The conversion efficiency into the continuous X-ray spectrum was calculated. The results of comparison of numerical calculations with experimental measurements showed their satisfactory agreement. Keywords: laser plasma, petawatt laser, X-ray radiation, PIC simulation.
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