Diocotron Instability of a Relativistic Coaxial Multi-Ring Hollow Electron Beam.
Abstract
The diocotron stability properties of a relativistic coaxial multi-ring hollow electron beam are investigated using a macroscopic cold fluid description based on moment-Maxwell equations. It is found that for a broad range of beam parameters and somewhat more general type beam profile the growth rate of instability has a sensitive dependence on fractional charge neutralization, relative position of the rings with conducting wall and gap-length of the rings. In the case of a sharp boundary density profile, the beam can be stabilized easily by a small fractional charge neutralization with appropriate gap-length. The growth rate can be either enhanced or reduced depending on the position and gap-length of the rings. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 18, 1980
- Accession Number
- ADA088054
Entities
People
- H. C. Chen
- P. J. Palmadesso
Organizations
- United States Naval Research Laboratory