
Accession Number : AD0664149
Title : WAVE PROPAGATION ON SINGLE CARRIER BEAMS OF CYLINDRICAL GEOMETRY IN A FINITE MAGNETIC FIELD.
Descriptive Note : Technical rept.,
Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J
Personal Author(s) : Zotter,Bruno
Report Date : OCT 1967
Pagination or Media Count : 23
Abstract : Wave propagation in a collisionless beam of singlecharge carriers, such as an electron beam, is analyzed in terms of modes of axial symmetry. It is found that four modes are usually sufficient to fulfill the initial conditions, but under certain conditions six modes can exist. The mode amplitudes are calculated and a magnetic field dependence is found for an additional term in the spacecharge mode amplitude. A field dependent term is also found in the expression for power flow due to crosscoupling of the spacecharge and the vortex modes, which may explain the reduction of noise figure with increasing magnetic field observed recently in travelingwave amplifiers. (Author)
Descriptors : (*TRAVELING WAVE TUBES, PROPAGATION), (*RADIOFREQUENCY POWER, *WAVE PROPAGATION), MAGNETIC FIELDS, EXCITATION, ELECTRON BEAMS, SPACE CHARGE, NOISE(RADIO), ELECTROMAGNETIC RADIATION, MATHEMATICAL ANALYSIS
Subject Categories : Electrical and Electronic Equipment
Radiofrequency Wave Propagation
Distribution Statement : APPROVED FOR PUBLIC RELEASE