Title :
Experimental determination of ion density trapped by electron beam
Author :
Hartnagel, H.L. ; Herkmen, I.
Author_Institution :
University of Newcastle upon Tyne, Department of Electrical & Electronic Engineering, Newcastle upon Tyne, UK
Abstract :
A new probing technique has been employed to determine the ion density trapped by the potential well of an electron beam as used in microwave tubes, and unexpectedly high values of ionic charge have been found on the axis, the strong space-charge fields of which are neutralised by slow secondary electrons.
Keywords :
microwave tubes; probes; space charge; stability; electron beam; instability effects; ion density; microwave tubes; probing technique; slow secondary electrons; space charge; space charge fields;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19720312
