Accession Number:
AD0757190
Title:
Surface Currents on a Conducting Sphere Due to a Non-Isotropic Emitted Pulse of Electrons.
Descriptive Note:
Masters thesis,
Corporate Author:
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
Personal Author(s):
Report Date:
1973-03-01
Pagination or Media Count:
107.0
Abstract:
Equations for the surface currents on a perfectly conducting sphere are developed in terms of the motion of a pulse of electrons emitted from the exterior surface of the sphere. The motions of the emitted electrons are determined self-consistently by using Greens function techniques to solve for the electric and magnetic fields in the space surrounding the sphere. The problem assumes that the electrons are emitted non-relativistically with azimuthal symmetry, and that the fields are essentially quasi-static in character. The resulting integral equations are solved using a mixture of analytical and numerical techniques. A specific example is worked out assuming uniform emission over one hemisphere by a delta function pulse of electrons with an energy distribution in the kev range. The results are presented graphically for a variety of emission currents, and it was found that this technique will provide useful results for emission pulse densities below 10 coulombs per square meter. Author
Descriptors:
Subject Categories:
- Electricity and Magnetism