Evidence of a New Spectral Line Intensity Formula for Optical Emission

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Experimental evidence of a new intensity formula in optical emission spectroscopy is presented. The evidence is based on two different methods of data analysis. The mathematical foundation of analysis of the fluctuations in data of repeatedly measured line intensities is presented in detail. This method applied to data from various spectral lamps yields strong support for the new formula. By another more straightforward method, tabulated standard values of absolute intensities of a great number of spectral lines are shown to be in excellent agreement with the new formula. It is suggested that the two methods of analysis can be useful in spectrochemical research for identification of spectral lines and determination of atomic transition rates. The significance of the new formula is discussed in view of Planck's blackbody radiation law.

Keywords: Analytical methods; Arc, dc; Emission spectroscopy; Hollow cathode excitation; Hollow cathode lamps; UV-visible spectroscopy

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702904417869

Affiliations: 1: Swedish Institute of Space Physics, P.O. Box 812, S-981 28 Kiruna, Sweden 2: Swedish Institute of Space Physics, P.O. Box 812, S-981 28 Kiruna, Sweden; present address: STRI AB, P.O. Box 701, 771 01 Ludvika, Sweden

Publication date: November 1, 1990

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