Accession Number:

AD0672065

Title:

WAVE PROPAGATION ON HOLLOW ELECTRON BEAMS IN FINITE MAGNETIC FIELDS.

Descriptive Note:

Technical rept.,

Corporate Author:

ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s):

• Zotter,Bruno

Report Date:

1968-06-01

Pagination or Media Count:

33.0

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

Descriptors:

• (*ELECTRON TUBES
• MICROWAVE FREQUENCY)
• (*ELECTROMAGNETIC RADIATION
• PROPAGATION)
• TRAVELING WAVE TUBES
• SPACE CHARGE
• MAGNETIC FIELDS
• OSCILLATION
• PLASMAS(PHYSICS)
• ELECTRON BEAMS
• EFFICIENCY
• NOISE(RADIO)
• MATHEMATICAL ANALYSIS

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE