Proton Acceleration in Underdense Plasma by Ultraintense Laguerre-Gaussian Laser Pulse
Plasma Physics
2015-06-22 v1 Optics
Abstract
Three-dimensional particle-in-cell simulation is used to investigate the witness proton acceleration in underdense plasma with a short intense Laguerre-Gaussian (LG) laser pulse. Driven by the LG10 laser pulse, a special bubble with an electron pillar on the axis is formed, in which protons can be well-confined by the generated transversal focusing field and accelerated by the longitudinal wakefield. The risk of scattering prior to acceleration with a Gaussian laser pulse in underdense plasma is avoided, and protons are accelerated stably to much higher energy. In simulation, a proton beam has been accelerated to 7 GeV from 1 GeV in underdense tritium plasma driven by a 2.14x1022 W/cm2 LG10 laser pulse.
Keywords
Cite
@article{arxiv.1407.6467,
title = {Proton Acceleration in Underdense Plasma by Ultraintense Laguerre-Gaussian Laser Pulse},
author = {Xiaomei Zhang and Baifei Shen and Lingang Zhang and Jiancai Xu and Xiaofeng Wang and Wenpeng Wang and Longqiong Yi and Yin Shi},
journal= {arXiv preprint arXiv:1407.6467},
year = {2015}
}