Title :
Langmuir Wave Phase Velocity in Unneutralized Beams
Author :
Godfrey, Brendan B.
Author_Institution :
University of California Los Alamos Scientific Laboratory Los Alamos, New Mexico 87545
Abstract :
We investigate the dispersion relation for long wavelength slow Langmuir waves in a relativistic particle beam propagating along a strong magnetic guide field in an evacuated metallic waveguide. For a large class of beam radial profiles, wave phase velocity drops to zero with infinite slope as beam current approaches the space-charge limit. This result is of importance to certain collective ion acceleration proposals.
Keywords :
Acceleration; Dispersion; Electron traps; Kinetic energy; Laboratories; Magnetic confinement; Particle beams; Proposals; Space charge; Waveguide components;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.1978.4317145
