Identification of Chemical Species in a Plasma by Emission Spectroscopy

Authors: Raisen, Elliott¹; Carrigan, Richard A.²; Raziunas, Victor¹; Loseke, W.A.¹; Grove, E.L.¹

Source: Applied Spectroscopy, Volume 19, Issue 2, Pages 41-62 (March 1965) , pp. 41-48(8)

Publisher: Society for Applied Spectroscopy

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Abstract:

Optical spectroscopy was used to identify the chemical species and the state of excitation of these species in argon, air, and nitrogen plasmas. The 2400 to 8800 A wavelength region was studied. Copper-tungsten and graphite-graphite electrodes were used. The species observed were Ar, Ar⁺, O, N, N₂, N₂⁺, C, C₂, and CN, the latter three being due to graphite electrodes. The major species found correlated with those species predicted from thermodynamic calculations in air. However, certain species, NO and O₂, were not observed.

Document Type: Research article

DOI: http://dx.doi.org/10.1366/000370265789620014

Affiliations: 1: IIT Research Institute, Chicago, Illinois 2: IIT Research Institute, Chicago, Illinois; present address: National Science Foundation, Washington, D.C.

Publication date: 1965-03-01

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