A rf, electrodeless plasma-generator was developed which operated at peak plasma powers of 50 kw. Th plasma was vortex stabilized, and was contained within a water-cma operating at 400 KILOCYCLES. Master's thesis, by Howard R. Cannon. Aug 62, 71p. incl. illus. tables, 3 refs. (Rept. no. GA/phys/62-2) Unclassified report DESCRIPTORS: *Induction heating, *Plasma physics, Radiofrequency, Instrumentation, Thesis. Identifiers: Energy transfer. A rf, electrodeless plasma-generator was developed which operated at peak plasma powers of 50 kw. Th plasma was vortex stabilized, and was contained within a water-cooled Vycor tube. Power was measured calorimetrically. Radiation power was measured by alternately using clear water and water made opaque with India ink to cool the Vycor tube. A model temperature profile was deduced from spectrographic measurements transverse to the plasma axis. Maximum plasma temperatures were shown to exist in a thin cylindrical sheath near the plasma surface, with relatively cooler temperatures existing at the center-line gas back-flow. Effects of changing gas flowrate, gas composition, rf power, and Vycor tube diameter on the effectiveness of the energy coupling mechanism are shown.