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 pinch-reflex diode. Such a current generates large tangential magnetic fields along the electron-emitting cathode surfaces. These fields, in turn, impart a finite angular momentum to the electrons as they are injected into the anode-cathode gap. The resultant particle self-fields alter electron trajectories in such a way as to boost electron space charge near certain portions of the ion-emitting 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