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Abstract

In certain circumstances the resonant cavity technique may be better suited for absolute density measurements in a magnetised plasma than Langmuir probes with microwave interferometer calibration. The feasibility of this method was therefore investigated. Density measurements were obtained for an axial magnetised argon discharge, with mode m=6 corresponding to resonant frequencies in the vicinity of 8 GHz. The value of the line-averaged density, corrected for the effects of both the non-uniform density profile and the fringing fields, was plotted as a function of the discharge current. It was shown to be in good agreement with values obtained using a microwave interferometer.

Additional information

Authors: PARIS P J, Centre de Recherches en Physique des Plasmas, École Polytechnique Fédérale de Lausanne, 21 avenue des Bains, CH-1007 Lausanne (CH);TRAN M Q, Centre de Recherches en Physique des Plasmas, École Polytechnique Fédérale de Lausanne, 21 avenue des Bains, CH-1007 Lausanne (CH);SAWLEY M L, I.M.H.E.F. - E.P.F.L., ME - Ecublens, CH-1015 Lausanne (CH);VOSER K, Organisation Zoller SA, CH-1800 Vevey (CH)
Bibliographic Reference: Paper presented: XIX International Conference on Phenomena in Ionized Gases, Belgrade (YU), July 10-14, 1989
Availability: Available from (1) as Paper EN 34606 ORA
Record Number: 198911080 / Last updated on: 1994-12-01
Category: PUBLICATION
Original language: en
Available languages: en