Helical slow wave antenna for launching lower hybrid waves in a plasma
- 1 April 1982
- journal article
- Published by IOP Publishing in Plasma Physics
- Vol. 24 (4), 369-387
- https://doi.org/10.1088/0032-1028/24/4/003
Abstract
The characteristics of a helical antenna employed for excitation of lower hybrid waves (LHW) in a plasma are investigated. The helical antenna is constructed by winding a cable on a glass discharge tube. It is shown experimentally that the helical antenna can excite LHW in a wide frequency range and with arbitrary refractive index parallel to the magnetic field. An increase of the longitudinal refractive index due to plasma loading is observed and analyzed by transmission line theory. Qualitative agreement is obtained between theory and experiment.Keywords
This publication has 8 references indexed in Scilit:
- Current generation due to a travelling lower hybrid wave excited by helical antennasPhysics Letters A, 1981
- Compact Antennas for Lower Hybrid Wave HeatingJapanese Journal of Applied Physics, 1981
- Lower hybrid waves in octopole tokamakNuclear Fusion, 1980
- Retardation of electromagnetic waves by helices of large diametersCzechoslovak Journal of Physics, 1979
- Alumina Loaded Antenna for Lower Hybrid Wave HeatingJapanese Journal of Applied Physics, 1978
- Detection of lower hybrid waves within a plasma by microwave scatteringReview of Scientific Instruments, 1978
- Slow-wave launching at the lower hybrid frequency using a phased waveguide arrayNuclear Fusion, 1976
- Excitation of Lower-Hybrid Waves by a Slow-Wave StructurePhysical Review Letters, 1975