Population Measurement of the 3p54s Configuration Levels in an Argon Microwave Plasma at Atmospheric Pressure

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Abstract:

Metastable atoms, due to their intrinsic properties, are very useful to characterize plasma and to control the scientific and technological applications carried out with it. This paper describes the implementation of a method to determine the densities of the argon 3p54s metastable and resonant levels in a microwave plasma at atmospheric pressure. Because the method is based on the self-absorption of the radiation emitted by the plasma, no external radiation source is needed. Using this method, the populations of the four levels of the 3p54s argon configuration were found to be in the range 1010–1012 cm−3, in agreement with the values found in the literature.

Keywords: AES; ARGON METASTABLE LEVELS; ATMOSPHERIC PRESSURE; ATOMIC EMISSION SPECTROSCOPY; MICROWAVE PLASMAS; RADIATION SELF-ABSORPTION

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370207781393343

Affiliations: Grupo de Espectroscopía de Plasmas, Edificio A.Einstein (C-2), Campus de Rabanales, Universidad de Córdoba, 14071 Córdoba, Spain

Publication date: July 1, 2007

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