• plasma
• plasma physics
• bremsstrahlung
• laser-plasma interaction
• high energy physics
• gamma-ray sources

The focus of this work is the study of Bremsstrahlung emission happening when a relativistic electron impacts a high-Z target. Although this system has been extensively studied in the hypothesis of a neutral target, a new context of modern research facilities equipped with Multi-Petawatt laser, allowing so to produce multi-GeV electrons, requires us to generalize the study to partially/completely ionized targets (Plasma). In this work are reported the theory necessary to understand the Bremsstrahlung cross-sections in the different electron energy regimes. Making use of the cross-sections and the integrated quantities related to them, I illustrate the implementation of an original Monte-Carlo code for Bremsstrahlung for the PIC code SMILEI and I benchmark it against the theory. Finally, we use it to predict a future APOLLON experiment aiming to produce pair plasma using Bremsstrahlung-generated photons.