THE OMEGATRON VERSUS A SECTOR-TYPE MASS SPECTROMETER FOR RESIDUAL GAS STUDIES,
Abstract
Selecting a mass spectrometer for specific residual gas studies in ultra-high vacuum research can be a research project in itself. The type of instrument used plays an important part in the interpretation of experimental data. Extensive work has been reported on the use of the omegatron mass spectrometer as a residual gas analyzer capable of measuring partial pressures in the 10 to the minus 11 power torr range. When an ultimate limit of at least 10 to the minus 13 power torr was announced for a sector-type mass spectrometer with an electron multiplier, it was thought that a comparison of these two instruments would give considerable insight as to what effect each had on the vacuum ambient. A laboratory ultra-high vacuum system was modified to include both types of partial pressure analyzers so that each read the same ambient. Dynamic and static tests were made with selected pure gases while operating the analyzers individually and concurrently. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1963
- Accession Number
- AD0424732
Entities
People
- C. E. Ludington
- J. H. Bloom
- R. L. Phipps
Organizations
- Air Force Cambridge Research Laboratories