MEASUREMENTS OF GROWTH AND DAMPING RATES IN AN INHOMOGENEOUS LOW-BETA PLASMA COLUMN.
Abstract
Electrostatic low frequency waves, propagating with a k perpendicular >> k parallel and with frequencies omega < omega sub c (omega sub c = ion cyclotron frequency) in the radial edge of a thermalized, low temperature and low-beta Cs plasma column, can be switched on and off by a fast change of d.c. voltage applied to a column aperture ring. From the oscillation growth and decay connected with the aperture voltage switch, growth and damping rates of this instability were derived. This paper describes the method and the results of wave growth and damping rate measurements as a function of the wave frequency, plasma density, and the potential drop through the plasma column edge. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1970
- Accession Number
- AD0709878
Entities
People
- G. L. J. Mueller
- R. S. Palmer
- W. Friz
Organizations
- Air Force Research Laboratory