This report describes a stainless steel mercury diffusion pump and cold t rap designed for use in the Mass Spectrometer (Line Recorder) tube rack. Two refrigerant reservoirs are discussed, one for use with liquid nitrogen, the other for installation with a mechanical refrigeration system. Curves and tables showing the results of tests on trial models as well as production models of the final design are included. Operation and physical specifications for the unit are included.
展开▼