Title :
Explosive instability in a backward wave oscillator
Author :
Liu, C.S. ; Tripathi, V.K.
Author_Institution :
Lab. for Plasma Res., Maryland Univ., College Park, MD, USA
fDate :
2/1/1993 12:00:00 AM
Abstract :
A plasma filled backward wave oscillator supports Trivelpiece-Gould (TG) and TM modes. The former can be driven unstable by a relativistic electron beam via Cerenkov interaction or by the plasma return current as two stream instability. This unstable TG mode can parametrically couple to a TM mode via a negative energy beam mode giving rise to an explosive instability
Keywords :
backward wave tubes; microwave oscillators; plasma filled waveguides; plasma instability; plasma transport processes; plasma-beam interactions; relativistic electron beam tubes; Cerenkov interaction; Cherenkov interaction; TG mode; TM modes; Trivelpiece-Gould modes; explosive instability; negative energy beam mode; plasma filled backward wave oscillator; plasma return current; relativistic electron beam; rippled wall waveguide; two stream instability; Electron beams; Explosives; Frequency; Laser beams; Optical coupling; Oscillators; Particle beams; Plasma density; Plasma devices; Plasma waves;
Journal_Title :
Plasma Science, IEEE Transactions on
