1. Quasi-monoenergetic electron beams production in a sharp density transition.
- Author
-
Fourmaux, S., Ta Phuoc, K., Lassonde, P., Corde, S., Lebrun, G., Malka, V., Rousse, A., and Kieffer, J. C.
- Subjects
- *
PLASMA accelerators , *LASER pulses , *ELECTRON beams , *ELECTRON distribution , *ELECTRON spectroscopy - Abstract
Using a laser plasma accelerator, experiments with a 80 TW and 30 fs laser pulse demonstrated quasi-monoenergetic electron spectra with maximum energy over 0.4 GeV. This is achieved using a supersonic He gas jet and a sharp density ramp generated by a high intensity laser crossing pre-pulse focused 3 ns before the main laser pulse. By adjusting this crossing pre-pulse position inside the gas jet, among the laser shots with electron injection, more than 40% can produce quasi-monoenergetic spectra. This could become a relatively straight forward technique to control laser wakefield electron beams parameters. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF