Accession Number : AD0620690

Title :   FOCUSING OF AN ELECTRON STREAM WITH RADIOFREQUENCY FIELDS,

Corporate Author : CALIFORNIA UNIV BERKELEY ELECTRONICS RESEARCH LAB

Personal Author(s) : Birdsall,C. K. ; Rayfield,G. W.

Report Date : 06 MAY 1964

Pagination or Media Count : 24

Abstract : A cylindrical stream of electrons is focused solely by the fields of a slow electromagnetic wave. An analysis is obtained by transforming to the wave frame in which the equations of motion of electrostatic periodic focusing are valid. A second analysis is made by transforming to the electron frame and approximating the fields in order to compare fast-wave and slow-wave focusing. Several experiments are presented using a helix as the slow waveguide, and results are found to be in rough agreement with theory. (Author)

Descriptors :   (*ELECTRON BEAMS, FOCUSING), (*RADIOFREQUENCY LENSES, RADIOFREQUENCY), ELECTROMAGNETIC RADIATION, SPACE CHARGE, HELIXES, VELOCITY, MATHEMATICAL ANALYSIS

Distribution Statement : APPROVED FOR PUBLIC RELEASE