Tuning the electron energy by controlling the density perturbation position in laser plasma accelerators
Plasma Physics
2012-10-24 v2 Accelerator Physics
Abstract
A density perturbation produced in an underdense plasma was used to improve the quality of electron bunches produced in the laser-plasma wakefield acceleration scheme. Quasi-monoenergetic electrons were generated by controlled injection in the longitudinal density gradients of the density perturbation. By tuning the position of the density perturbation along the laser propagation axis, a fine control of the electron energy from a mean value of 60 MeV to 120 MeV has been demonstrated with a relative energy-spread of 15 +/- 3.6%, divergence of 4 +/- 0.8 mrad and charge of 6 +/- 1.8 pC.
Keywords
Cite
@article{arxiv.1201.1252,
title = {Tuning the electron energy by controlling the density perturbation position in laser plasma accelerators},
author = {P. Brijesh and C. Thaury and K. Ta Phuoc and S. Corde and G. Lambert and V. Malka and S. P. D. Mangles and M. Bloom and S. Kneip},
journal= {arXiv preprint arXiv:1201.1252},
year = {2012}
}
Comments
7 pages, 8 figures