Although light scattering may be considered already a subfield of emission spectroscopy, if this is defined in the broadest sense, orthodox emission spectroscopy commonly is understood to be concerned with the electromagnetic radiation emitted from plasmas without external influence on the radiators. The main objective usually is to obtain information on the plasma state, i.e. for example, on temperatures, densities, plasma composition, magnetic and electric fields, or waves excited in the plasma. This is certainly only possible to that extent that these parameters influence sufficiently the emitted electromagnetic radiation. For applications, on the other hand, one may simply be interested in the emitted spectrum of a specific discharge.
KeywordsPlasma Column Emission Coefficient Visible Spectral Region Ionization Stage Spectral Line Broadening
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