Local plasma diagnostics using line profiles in the plasma emission spectrum

Physics

Scientific paper

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Laboratory Plasma, Plasma Diagnostics

Scientific paper

The paper is devoted to a development of the techniques enabling to evaluate local parameters of inhomogeneous plasmas of high-pressure dc arcs and jets directly from recorded spectra of the observed plasma volume emission. The approach allows avoiding any common tomography technique, such as, e.g., Abel inversion procedure in the case of an axial symmetry of the plasma volumes. The results of the problem analytical approach are considered, as well as data of a numerical simulation of the line spectra formation are presented. Also some experimental results confirming the technique applicability are demonstrated. The resulting technique appeared to the rather simple, and it can be easily applied for diagnostics of different plasmas at their laboratory and (especially) industrial use.

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