
Accession Number : ADA114983
Title : The Use of Finite J sub theta for Increasing the Ion Efficiency of High Impedance Diodes.
Descriptive Note : Memorandum rept.,
Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC
Personal Author(s) : Barker,Robert J ; Goldstein,Shyke A
PDF Url : ADA114983
Report Date : 12 Apr 1982
Pagination or Media Count : 45
Abstract : Numerical simulations predict that the ratio of the effective ion current to total diode current can be significantly increased by introducing a small but finite azimuthal current into the tip of the cathode shank of a high impedance (4 omega) axial pinchreflex diode. Such a current generates large tangential magnetic fields along the electronemitting cathode surfaces. These fields, in turn, impart a finite angular momentum to the electrons as they are injected into the anodecathode gap. The resultant particle selffields alter electron trajectories in such a way as to boost electron space charge near certain portions of the ionemitting anode surface. The net consequence is a modification of the radial profile of ion emission which enhances the net ion current transmitted through the interior of the hollow cathode shank. (Author)
Descriptors : *NUMERICAL ANALYSIS, *Mathematical models, *Diodes, *Electrical impedance, *Ions, High rate, Efficiency, Magnetic fields, Cathodes, Angular momentum, Electrons, Tangents, Axes, Pinch effect
Subject Categories : Electrical and Electronic Equipment
Theoretical Mathematics
Distribution Statement : APPROVED FOR PUBLIC RELEASE