An analytical optimization of plasma density profiles for downramp injection in laser wake-field acceleration
Plasma Physics
2026-03-17 v3 Accelerator Physics
Abstract
We propose and detail a multi-step analytical procedure, based on an improved fully relativistic plane model for Laser Wake Field Acceleration, to tailor the initial density of a cold diluted plasma to the laser pulse profile, so as to control and optimize the partial wave-breaking of the plasma wave and maximize the acceleration of small bunches of electrons self-injected by the first wave-breaking at the density down-ramp, at least in the first stages of their acceleration phase. We find an excellent agreement with the results of Particle In Cell simulations obtained with the same input data.
Keywords
Cite
@article{arxiv.2506.06814,
title = {An analytical optimization of plasma density profiles for downramp injection in laser wake-field acceleration},
author = {Gaetano Fiore and Paolo Tomassini},
journal= {arXiv preprint arXiv:2506.06814},
year = {2026}
}
Comments
Latex file 34 pages, 15 figures. Final version accepted in Physica D: nonlinear phenomena. Minor typos corrected