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Instruments and Facilities
Environmental Tracer Group

He Mass Spec | Noble Gas Mass Spec | Ar Mass Spec | SF6 GC | Gas Extraction Lab | He MS Report

We operate a multi-purpose noble gas mass spectrometer (MAP 215-50) for measurement of He, Ne, Ar, Kr, and Xe isotopes (precision: about ±1 to 2 percent for noble gas abundances).

It is equipped with an ESA (Electrostatical Analyzer) for suppression of the background on mass 3.016 (3He). The instrument has two sample preparation lines, one for vacuum extraction of water samples, and another for crushing or melting rock and sediment samples. The individual measurements are performed in a semi-automated mode.

October 10, 2003