Sustained electron self-injection in an evolving ellipsoid bubble for laser-plasma interaction
Abstract
Electron injection in an evolving ellipsoid bubble for laser wakefield acceleration is investigated by 2.5D PIC (Particle-In-Cell) simulation. Generally speaking, the self-injection electrons come from the position near the transverse radius in the bubble acceleration. However, we found the electrons near the laser axis also can be trapped into a longitudinal-expanding bubble. Moreover, this new self-injection mechanism is still existence after the electron self-injection stopped, which initially locates at near the bubble transverse radius. This phenomenon is confirmed through single-particle dynamic simulation. Besides, this new mechanism brings a high charge electron beam for acceleration, due to the sustained self-injection.
Cite
@article{arxiv.1703.09053,
title = {Sustained electron self-injection in an evolving ellipsoid bubble for laser-plasma interaction},
author = {X. F. Li and Q. Kong and S. Kawata and Y. J. Gu and Q. Yu and J. F. Qu},
journal= {arXiv preprint arXiv:1703.09053},
year = {2017}
}
Comments
10pages,5figures