THE STABILITY OF CROSSED-FIELD ELECTRON BEAMS.
Abstract
The stability of crossed-field electron beams is treated for arbitrary values of the parameter. The theory bridges a gap between existing theories applicable for q less than 1 and for q = 1. For wavelengths longer than about five beam thicknesses and instability occurs with a growth rate not exceeding approximately 1/4q omega c. It can be shorted out by conducting walls, or else one can prevent long wavelengths in closed (cylindrical or toroidal) beam geometries. For wavelengths shorter than roughly 6q beam thicknesses a cyclotron instability occurs with a growth rate. This becomes practically unimportant for q less than 0.2. Observations support these theoretical results. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1966
- Accession Number
- AD0479186
Entities
People
- L. Linson
- O. Buneman
- R. H. Levy