Abstract
The general theory of the excitation of space-charge modes on an annular electron beam in a cylindrical drift tube is established for the case of infinite magnetic-focusing field. Computations for various tunnel diameters have been made, showing that, if thin annular beams are utilized, the normalized tunnel diameter which is around unity for a solid beam may be increased by a considerable factor. This factor is about 4 for a particular case. Variations of the spacing between beam and tunnel consequent upon aberrations of the focusing system should not introduce serious loss of gain or variation in performance. Since annular beams can be designed for higher perveances than can solid beams, important gains in performance can be expected.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proceedings of the IEE - Part B: Radio and Electronic Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
