Share Email Print
cover

Proceedings Paper

Radiation signatures of laser driven wakes in plasmas
Author(s): Daniel F. Gordon; Michael H. Helle; Dmitri Kaganovich; Antonio Ting
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In laser driven accelerators, the interaction of laser radiation with plasma leads to a variety of scattering mechansims. The scattered radiation can be used to understand the wake structure and its effect on electron acceleration. In the case of a resonantly driven quasi-linear wake, spectral broadening due to photon acceleration and deceleration is related to the coupling of energy into plasma waves. Simultaneous time and frequency analysis of the laser fields produces distinctive features in the photon phase space that give information on wake generation in long plasma channels. The ponderomotive guiding center algorithm is advantageous for modeling such interactions because it allows for averaging over optical cycles, and can be implemented in axisymmetric geometry. In the case of the nonlinear wakes that are driven in the self-guided regime, a region of electron cavitation is formed, which emits electro-optic shocks at the second harmonic of the drive laser. The form of this radiation can be correlated with electron trapping.

Paper Details

Date Published: 26 May 2011
PDF: 8 pages
Proc. SPIE 8079, Laser Acceleration of Electrons, Protons, and Ions; and Medical Applications of Laser-Generated Secondary Sources of Radiation and Particles, 80790J (26 May 2011); doi: 10.1117/12.889997
Show Author Affiliations
Daniel F. Gordon, U.S. Naval Research Lab. (United States)
Michael H. Helle, U.S. Naval Research Lab. (United States)
Dmitri Kaganovich, U.S. Naval Research Lab. (United States)
Antonio Ting, U.S. Naval Research Lab. (United States)


Published in SPIE Proceedings Vol. 8079:
Laser Acceleration of Electrons, Protons, and Ions; and Medical Applications of Laser-Generated Secondary Sources of Radiation and Particles
Wim P. Leemans; Eric Esarey; Simon M. Hooker; Kenneth W. D. Ledingham, Editor(s)

© SPIE. Terms of Use
Back to Top