Observation of Large-Angle Quasimonoenergetic Electrons from a Laser Wakefield

D. Kaganovich, D. F. Gordon, and A. Ting
Phys. Rev. Lett. 100, 215002 – Published 29 May 2008

Abstract

A relativistically intense laser pulse is focused into a helium jet and quasimonoenergetic electrons emitted at a 40° angle with respect to the laser axis are observed. The average electron energy is between 1 and 2 MeV and the total accelerated charge is about 1 nC emitted in a 10° cone angle. Three dimensional particle-in-cell simulations reproduce key features of the experimental results and show that the interaction between ionization heating and nonlinear cavitation wakefields is responsible for the acceleration.

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  • Received 15 January 2008

DOI:https://doi.org/10.1103/PhysRevLett.100.215002

©2008 American Physical Society

Authors & Affiliations

D. Kaganovich*, D. F. Gordon, and A. Ting

  • Plasma Physics Division, Naval Research Laboratory, Washington, D.C. 20375, USA

  • *Present address: Icarus Research, Inc., Bethesda, MD, USA. Corresponding author. Dmitri@ppdmail.nrl.navy.mil

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Vol. 100, Iss. 21 — 30 May 2008

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