
Glow Discharge Optical Emission Spectroscopy (GDOES) or glow discharge spectroscopy is a technique for determining chemical composition as a function of depth for film thicknesses from a few 100 nm to a few hundred micrometers. In this process, an Ar plasma is ignited over the surface of the sample and the material is ablated at a relatively high rate. The ablated atoms are excited and therefore emit light in the visible range, which is measured with a variety of spectrometers and the concentration of the elements is determined.
Fields of application: Routine examinations of nitriding, boriding or carburizing coatings, electroplating coatings, spray coatings, inorganic paints, etc.
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