Magnetic Control of Low Pressure Discharges.
Abstract
In abnormal glow discharges, operated in electronnegative gas mixtures, the discharge resistance can be increased by the application of a transverse magnetic field. This effect is caused by a shift of the electron energy distribution towards lower energies. In the positive column of the discharge this leads to reduction of electron drift velocity and ionization rate, and for certain attachers, an increase of the attachment rate and consequently to an increase of the resistivity. A coaxial discharge system was used to study the steady-state and transient behaviour of abnormal glow discharges in a He:SF6 gas mixture in transverse magnetic fields. The steady- state current characteristics were measured for current densities of 1 A/cm2 and an interelectrode distance of 2 cm, the discharge voltage was found to increase with a rate of 2 kV/Tesla, corresponding to an increase of electric field intensity of 1 kV/Tesla/cm.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1987
- Accession Number
- ADA186794
Entities
People
- Karl H. Schoenbach
Organizations
- Old Dominion University