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Generation of tunable, 100–800 MeV quasi-monoenergetic electron beams from a laser-wakefield accelerator in the blowout regime
Physics of Plasmas (2012)
  • Sudeep Banerjee
  • Nathan D. Powers
  • Vidiya Ramanathan
  • Isaac Ghebregziabher
  • Kevin J. Brown
  • Chakra M. Maharjan
  • Shouyuan Chen
  • Arnaud Beck
  • Erik Lefebvre
  • Serguei Y. Kalmykov
  • Bradley A. Shadwick
  • Donald P. Umstadter
Abstract

In this paper, we present results on a scalable high-energy electron source based on laser wakefield acceleration. The electron accelerator using 30 - 80 TW, 30 fs laser pulses, operates in the blowout regime, and produces high-quality, quasi-monoenergetic electron beams in the range 100 - 800 MeV. These beams have angular divergence of 1 - 4 mrad, and 5 - 25 percent energy spread, with a resulting brightness 10^{11} electrons mm^{-2} MeV^{-1} mrad^{-2}. The beam parameters can be tuned by varying the laser and plasma conditions. The use of a high-quality laser pulse and appropriate target conditions enables optimization of beam quality, concentrating a significant fraction of the accelerated charge into the quasi-monoenergetic component.

Keywords
  • Laser wakefield acceleration,
  • DIOCLES laser,
  • blowout regime,
  • GeV electrons from laser plasmas
Publication Date
Spring May, 2012
Citation Information
Sudeep Banerjee, Nathan D. Powers, Vidiya Ramanathan, Isaac Ghebregziabher, et al.. "Generation of tunable, 100–800 MeV quasi-monoenergetic electron beams from a laser-wakefield accelerator in the blowout regime" Physics of Plasmas Vol. 19 (2012)
Available at: http://works.bepress.com/donald_umstadter/41/