Temporal process of plasma discharge by an electron beam
Abstract
The process of the plasma discharge due to an electron beam is experimentally investigated. A pulse (∼540 μs) of an electron beam (0.5-1.5 keV, ≤20 mA) is injected into argon gas (5×10-5-5×10-4 Torr) in a magnetic field (50-300 G). The discharge based on a gas break down occurs cascade-likely in time. The gas beak down with some steps is explained by the two stream instability of an electron beam-plasma system, from the observation of the temporal evolution of the frequency spectra (0-3.0 GHz) of the instability and the measurement of the temporal plasma density and temperature.
- Publication:
-
Laser interaction and related Plasma Phenomena: 12th International Conference
- Pub Date:
- May 1996
- DOI:
- 10.1063/1.50370
- Bibcode:
- 1996AIPC..369.1205S
- Keywords:
-
- 52.40.Mj;
- 52.80.Tn;
- Particle beam interactions in plasmas;
- Other gas discharges