Abstract
The resonance escape factors for the lines emitted by a neutral magnesium atom MgI at 285.2127 nm (3 1S–3 1P) and of ionic magnesium MgII at 279.5528 nm (3 2S–3 2P) are calculated assuming a Voigt profile and in the case of MgCl2‐water plasma. The dependence of the escape factor on the optical thickness τ0 from the line center which itself depends on the two main spectral line shape broadening mechanisms (pressure and Doppler effects) are considered. The variation of the resonance escape factors with the temperature and the MgCl2 molar proportion are also investigated. This calculation is useful for the application of laser induced breakdown spectroscopy in the quantitative analysis of elemental composition.
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