Portable gas chromatograph-mass spectrometer system using getter pump.

摘要

A gas analyzing system that includes a vacuum chamber containing a mass spectrometer and a sampling device for introducing a gas sample into the chamber. A sorption pump is operatively connected to the chamber which is capable of maintaining the chamber at a high vacuum. The pump includes a diffusion barrier that provides smooth pumping characteristics and repeatable short term system behavior when sample pulses are introduced into the system.