Resonant Behavior of Electron Beams in Periodically Focused Tubes for Transverse Signal Fields

1 March 1955

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IRE

Vol. 43 (3) , 339-341
https://doi.org/10.1109/JRPROC.1955.278176

Abstract

A ribbon beam which is focused by a series of bidimensional electrostatic lenses exhibits a well-defined transverse resonance within a certain range of focusing conditions. The frequency of the resonance is derived for the case of a simple space-periodic focusing field; it is also shown that the focusing field determines the current density in the beam (and thus, in practice, the maximum usable beam current). An experiment is described which demonstrates by means of a transverse signal field the existence of the transverse electron resonance.

Keywords

RESONANCE
ELECTRON BEAMS
ELECTRON TUBES
ELECTROSTATICS
LENSES
RESONANT FREQUENCY
CURRENT DENSITY
EQUATIONS

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