Lower hybrid resonance heating in a hot electron plasma

Conference · Tue Jan 01 04:00:00 EST 1974

OSTI ID:4127777

Shohet, J L; Raimbault, P A

Electron and ion heating have been observed when rf at a frequency close to the lower hybrid resonance is coupled electrostatically into a hot electron plasma by means of an appropriate structure. The rf heating frequency is 10 MHz at a power of 500 W. The hybrid layer is identified with a rf interferometer correlated with density measurements. The electron temperature profile shows that the heating zone is located on the low density side of the hybrid layer. Plasma is expelled from the heating zone along the magnetic field lines. Relativistic electrons produced by the ECRH source at low pressure tend to limit the amount of electron heating by the rf, and a slight increase in ion temperature occurs as well. The maximum electron heating appeared to occur whenever the product of the perpendicular wave number and the electron gyro radius was approximately unity. (auth)

• Research Organization: Univ. of Wisconsin, Madison; Texas Tech Univ., Lubbock (USA). Plasma Lab.
• NSA Number: NSA-33-011615
• OSTI ID: 4127777
• Report Number(s): CONF-740642--
• Country of Publication: United States
• Language: English

Related Subjects

*PLASMA HEATING-- HYBRID RESONANCE
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COUPLING
ECR HEATING
ELECTRON TEMPERATURE
HIGH-FREQUENCY HEATING
N70100* --Physics--Controlled Thermonuclear Research-- Confinement & Heating