Mixing of Ambient Nitrogen in a Flowing Argon Inductively Coupled Plasma Discharge

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The concentration of argon and nitrogen are measured by gas chromatography for an inductively coupled plasma discharge in argon which is surrounded by a nitrogen sheath. The mixing of nitrogen with the argon discharge is substantially different than cold-gas mixing when no discharge is present. The formation of a toroidal discharge with a central flow further decreases the mixing of nitrogen with the discharge. More than a few percent nitrogen mixed into the argon discharge drastically alters the plasma temperature distribution.

Keywords: Emission spectroscopy; Gas chromatography; Gas mixing; Inductively coupled plasma discharge

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370275774455716

Affiliations: Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01002

Publication date: November 1, 1975

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