RESEARCH ON ROTATING RF FIELD PLASMA.
Final rept. 1 Oct 64-30 Sep 65,
OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS
Pagination or Media Count:
Two-phase, ion-cyclotron frequency power put to a magnetic bottle has produced a hydrogen plasma over a wide range of pressures. Electrons and ions which escape from the ends of the bottle have maximum energies in the neighborhood of 12 keV as indicated by multi-diffused junction detector with a depletion depth of 0-100 microns. A 30-joule diagnostic laser was used for measuring electron densities in the region of 10 to the 13 power per cc. A Fabry-Perot interferometer, with an interference filter for the H alpha 6563 A hydrogen line, was assembled for photographing the Haidinger rings. From the line-broadening measurements an energy of 18 eV was estimated for the neutral hydrogen atoms in the plasma. Ferrite cores were tested at 4.0 megacycles in a 5000-gauss B sub z magnetic field. The results encouraged the design of an ensemble of two eight-group, two-phase coils. This ensemble is being fabricated for the purpose of creating stronger revolving magnetic and rotating electric fields. Author
- Plasma Physics and Magnetohydrodynamics