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Absorption Half-Widths for the 422.67 nm Calcium Line in Hydrogen-Nitrogen and Hydrogen-Argon Diffusion Flames

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The use of a continuum source in conjunction with a piezoelectrically scanned Fabry-Perot interferometer is described for the observation of absorption line-widths of the calcium 422.67 nm line in hydrogen diffusion flames. The variation of the observed absorption half-width with calcium concentration has been examined. Values for the effective and collisional half-widths for the Ca absorption line are given, and the corresponding α-parameters and collisional cross sections are calculated.

Keywords: Absorption half-width; Calcium; Flame spectroscopy; Interferometry

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370273774333623

Affiliations: 1: Chemistry Department, Imperial College, London S.W.7, United Kingdom 2: Chemistry Department, Imperial College, London S.W.7, United Kingdom; on study leave from University of Buenos Aires, Argentina

Publication date: May 1, 1973

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