WAVE PROPAGATION ON HOLLOW ELECTRON BEAMS IN FINITE MAGNETIC FIELDS.

Abstract

Hollow electron beams find wide use in modern microwave tubes. The wave propagation on such beams, focused by finite magnetic fields, is studied under small-signal conditions. The dispersion relation for slow waves is derived, and numerical solutions are presented in graphical form. Two types of axisymmetric modes can exist on a hollow beam, which are called space-charge and vortex modes. The radial propagation constant and the plasma frequency reduction factor are shown for a number of typical cases. A brillouin diagram is given for a beam of perveance 5 microperv. Comparison is made with results of earlier publications which use the finite field approximation. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1968
Accession Number
AD0672065

Entities

People

  • Bruno Zotter

Organizations

  • United States Army Communications-Electronics Command

Tags

DTIC Thesaurus Topics

  • Axisymmetric
  • Dispersion Relations
  • Dispersions
  • Electromagnetic Wave Propagation
  • Electron Beams
  • Electrons
  • Frequency
  • Magnetic Fields
  • Microwave Tubes
  • Microwaves
  • Space Charge
  • Wave Phenomena
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Directed Energy
  • Microelectronics
  • Space
  • Space - Hall-Effect Thruster