Maximizing MeV x-ray dose in relativistic laser-solid interactions
Plasma Physics
2022-02-11 v1 Computational Physics
Abstract
Bremsstrahlung x-rays generated in laser-solid interactions can be used as light sources for high-energy-density science. We present electron and x-ray spectra from particle-in-cell and Monte Carlo simulations, varying laser pulse intensity and duration at fixed energy of 200J. Superponderomotive electron temperatures are observed at low intensity; a new temperature scaling is given that depends on pulse duration and density scale length. Short, high-intensity pulses create low-divergence electron beams before self-generated magnetic fields evolve, resulting in more forward-going MeV x-rays.
Cite
@article{arxiv.2202.04853,
title = {Maximizing MeV x-ray dose in relativistic laser-solid interactions},
author = {Kyle G. Miller and Dean R. Rusby and Andreas J. Kemp and Scott C. Wilks and Warren B. Mori},
journal= {arXiv preprint arXiv:2202.04853},
year = {2022}
}
Comments
6 pages, 5 figures