Measurement of the RF Magnetic Field Distribution in a Thermal Induction Plasma,
Abstract
The radial distribution of the rf magnetic field is measured with a water-cooled search coil of 3-mm diam in the midsection of an argon induction plasma flame maintained at 2.6 MHz in a 150-mm-wide tube. Over most of the flame section, the field is reduced from an unperturbed value of A/cm to 0.5A/cm. The skin depth is about 1 cm. In the annular space between the flame and the inductor coil, the field is increased by 10%. The resultant magnetic pressure gradients may cause a substantial radial flow of plasma toward the axis. The effects of signal averaging, current obstruction, and plasma cooling by the probe are discussed and found to be of minor consequence. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 30, 1970
- Accession Number
- AD0715265
Entities
People
- Hans U. Eckert
Organizations
- The Aerospace Corporation