Specific Process Knowledge/Characterization/SIMS: Secondary Ion Mass Spectrometry

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The Atomika SIMS has been decomissioned and is no longer available.

Atomika SIMS

The SIMS analyses the composition of a sample by secondary ion mass spectroscopy. By using either oxygen or cesium ions accelerated by a high tension the surface of the sample is sputtered off as ions. These ions are analysed in a mass spectrometer and one can determine the elemental composition as a function of depth. If compared to signals from reference materials one can quantify the atomic composition - in certain cases down to extremely low concentrations (ppm). Doping levels and impurities may be determined..