Laser light backscattering off an electron beam-plasma system
Abstract
An analysis of the stimulated Raman backscattering instability combined with a Buneman instability was performed for a head-on collision of a 10.6 micron CO2 laser beam with a nonrelativistic electron beam. The electron beam was directed through a laser-induced plasma with a density of up to 10 to the 16th/cu cm, which was originally produced by the CO2 laser beam. The instabilities were found to be synergic and additive, and were treated as a plasmon avalanche instability. It was found possible to produce a quasi-free electron laser if the wide-interval-pulsed electron beam was flushed outside the interaction chamber after streaming through the plasma. The analysis included the effects of the magnetic field within the interaction chamber.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- March 1983
- DOI:
- 10.1109/JQE.1983.1071864
- Bibcode:
- 1983IJQE...19..379S
- Keywords:
-
- Backscattering;
- Beam Plasma Amplifiers;
- Free Electron Lasers;
- Infrared Lasers;
- Laser Beams;
- Laser Plasma Interactions;
- Laser Stability;
- Tunable Lasers;
- Beam Interactions;
- Electron Beams;
- Electron Bunching;
- Electron Scattering;
- Light Scattering;
- Optical Countermeasures;
- Raman Spectra;
- Two Fluid Models;
- Lasers and Masers