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Our spectrometers are last generation rare gas spectrometers Helix SFT from Thermofischer. They are fully operated through a homemade Labview control software totally by-passing the proprietary QTegra operating system by Thermo (not used a slave).
These instruments are mass spectrometers with a magnetic sector (variable magnetic field) dedicated to high precision isotopic analysis of all Noble gases. They feature a Nier source for gas ionization, an electron multiplier for low current measurements in ion-counting mode (< 100 fA) and a Faraday cup for high current with commutable 10¹¹ and 10¹² Ohm fitted feedback resistors.
These spectrometers can measure masses from one to 140 uma with a mass resolution in excess of 700.