Abstract

A highly efficient TM 010 resonant cavity operating at 2.45 GHz has been shown to produce an external surface wave plasma propagating in the TM 01 mode at atmospheric pressure. The evanescent radial electric field of this surface wave plasma has been used as a detector for gas chromatography. The detector is based on monitoring the electric field surrounding the plasma with an antenna probe. As an analyte elutes from the chromatograph, the change in the magnitude of the electric field is dependent on the amount of analyte present.

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