DYNAMIC EFFECTS OF HIGH NU/GAMMA BEAM PLASMA INTERACTIONS.
Abstract
Generation and propagation characteristics of high nu/gamma electron streams have been investigated using diode voltage and current diagnostics, net and primary beam current monitors, graphite calorimeters and thin foil depth dosimeters, and scintillator-photodiode detectors. The effects of beam-plasma interactions of the time and spatial dependence of beam current have been measured and correlated with a diffusion dominated model of current neutralization. Improtant parameters in the model are primary current risetime, avalanche breakdown time of the background gas, and the plasma conductivity after breakdown. The existence of large primary electron transverse energy components was consistent with a magnetic pressure balance calculation indicating a dependence on (nu/gamma) sub net and the degree of current neutralization. Beam energy loss mechanisms are discussed and compared with observed beam energy loss. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1969
- Accession Number
- AD0708032
Entities
People
- Bruce M. Ecker
- Gerold Yonas
- John S. Rander
- Philip W. Spence