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Gas Extraction Line

Prep Line

Prep Line Software. Click image to enlarge.

The gas extraction line has a computer-controlled sample processing and introduction system connected to the mass spec inlet. This consists of a Janis cryogenic cold trap for routine separation of the noble gases (cryostat temperature control down to ~8 °K is maintained by a closed-loop compressor), air-actuated pneumatic valves, heated SAES getters, pressure sensors, and oil-free vacuum pumps (turbomolecular, scroll and ion) to minimize hydrocarbons. Air and specialized gas standards are automatically pipetted in known quantity (0.1 cm3) for routine calibration of the mass spectrometer.