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Short-wavelength radiation generation in ultra-relativistic laser-plasma interaction


Heppe,  Christian
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Heppe, C. (2020). Short-wavelength radiation generation in ultra-relativistic laser-plasma interaction. Bachelor Thesis, Ruprecht-Karls-Universität, Heidelberg.

Cite as: http://hdl.handle.net/21.11116/0000-0007-3664-C
The generation of collimated high-energy high brilliance γ-rays by a high-intensity laser pulse impacting a structured plasma target in the ultra-relativistic regime, is investigated with several 2D PIC-simulations using results of recent research. Comparing sweeps of incident power for two fixed focused intensities of normalised laser amplitudes a0 = 190 and a0 = 350, for a 40 fs laser pulse revealed that a maximum brilliance of 1.9 × 1019s −1mm−2mrad−2 (0.1%BW) −1 for photon energies exceeding 100 MeV can be achieved at energy conversion efficiencies of up to 2.3%, generating copious amounts of multi-MeV photons driven by strong multi-MT quasi static magnetic plasma fields. In prospect of the construction of new laser facilities, which are expected to operate in radiation dominated regimes, the generation of such all-optical γ-rays offers opportunities for a broad spectrum of applications in many fields of research.