On the charge transfer in an inductively coupled argon plasma

J.J.A.M. Mullen, van der, I.J.M.M. Raaijmakers, A.C.A.P. van Lammeren, D.C. Schram, B. Sijde, van der, H.J.W. Schenkelaars

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Absolute population densities for several excited states of magnesium are obtained for several locations in an inductively coupled plasma (ICP). They were used to construct Boltzmann-Saha plots for these positions and show that magnesium is close-to-LTE. The deviations from LTE are mainly limited to the levels sensitive to charge exchange with argon ions. These measured deviations can be explained by a simple model which shows that, although charge transfer is a dominant excitation and ionization mechanism in an ICP, the associated LTE deviations are limited in magnitude.
Original languageEnglish
Pages (from-to)1039-1051
JournalSpectrochimica Acta. Part B : Atomic Spectroscopy
Issue number9
Publication statusPublished - 1987


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