Accession Number : AD0259848

Title :   AN INVESTIGATION OF MAGNETIC TRANSVERSE WAVES ON AN ELECTRON BEAM

Descriptive Note : Technical rept.

Corporate Author : UTAH UNIV SALT LAKE CITY MICROWAVE DEVICE AND PHYSICAL ELECTRONICS LAB

Personal Author(s) : JOHNSON,C.C.

Report Date : 08 MAY 1961

Pagination or Media Count : 39

Abstract : An electron eam in the presence of an axial magnetic field supports four transverse waves-t o cyclotron waves and two synchrono s waves. A general coupling theory is developed from an electronic equation and a circuit equation to describe how these waves can be coupled to traveling-wave circuits. The polarization and power flow characteristics of the waves are derived and substantitated by physical arguments. This theory is applied to the bifilar helix, a circuit which can couple selectively to each of the four modes. A bifilar helix traveling-wave tube was used to investigate experimentally these four beam modes and provide a quantitative check of the coupling theory. (Author)

Descriptors :   *ELECTRON BEAMS, *MAGNETIC FIELDS, CYCLOTRONS, ELECTROMAGNETIC RADIATION, HELIXES, PROPAGATION, THEORY, TRAVELING WAVE TUBES

Distribution Statement : APPROVED FOR PUBLIC RELEASE