The filamented electron bunch of the bubble regime
Plasma Physics
2020-07-08 v2
Abstract
We present a theory for describing the inner structure of the electron bunch in the bubble regime starting from a random distribution of electrons inside the bubble and subsequently minimizing the system's energy. Consequently, we find a filament-like structure in the direction of propagation that is surrounded by various shells consisting of further electrons. If we specify a 2D initial structure, we observe a hexagonal structure for a high number of particles, corresponding to the close-packing of spheres in two dimensions. The two-dimensional structures are in agreement with the equilibrium slice model (ESM).
Keywords
Cite
@article{arxiv.1903.04858,
title = {The filamented electron bunch of the bubble regime},
author = {Lars Reichwein and Johannes Thomas and Alexander Pukhov},
journal= {arXiv preprint arXiv:1903.04858},
year = {2020}
}
Comments
7 pages, 9 figures; version 2 with improved figures and references to similar results in conventional accelerators