Title :
Transport of self-focused relativistic electron beams
Author :
Briggs, R.J. ; Clark, J.C. ; Fessenden, T.J. ; Hester, R.E. ; Lauer, E.J.
Author_Institution :
Lawrence Livermore Lab., Univ. of California, Livermore, Livermore, CA, USA
Abstract :
Experiments with the Astron beam (5 MeV, 0.4 kA) and an FX-25 beam (1.5 MeV, 15 kA) show that the transport of self-focused electron beams in neutral gases is limited by two Instabilities. At gas pressures from nearly zero to a few torr, the propagation is dominated by a form of two-stream instability. At higher pressures the resistive hose instability dominates. Between the two regimes, a pressure window exists in which the higher current diode beam propagates stably in both conducting and Insulating drift tubes.
Keywords :
electron beams; self-focusing; Astron beam; FX-25 beam; electron volt energy 5 MeV; gas pressures; resistive hose instability; self-focused relativistic electron beams; transport; two-stream instability; Current measurement; Extraterrestrial measurements; Frequency measurement; Heating; Laser beams; Particle beams; Plasmas;
Conference_Titel :
Electron Beam Research & Technology, 1977 2nd International Topical Conference on
Conference_Location :
Ithaca, NY
