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- W4238045692 abstract "The properties of small sublimation traps designed for use in general vacuum systems, as an alternative to the conventional liquid nitrogen trap, are described in this paper. Particular attention is paid to traps suitable for interposing between sensitive electronic measuring equipment and manifolds where pressures are in the range 10−3–10−4 mbar. It is shown that simple systems can be built and operated where the active titanium surface is maintained by slow but continuous sublimation onto a stainless steel substrate from a titanium molybdenum alloy wire. Provided care is taken to outgas all internal surfaces effective operation can be maintained at trap temperatures above 200°C. This is a particularly valuable feature for systems where neither liquid nitrogen nor cooling water is available. Applications are in conventional leak detection systems where the feature of trapping gases such as oxygen and water vapour in combination with being completely inert to helium and argon is particularly attractive. It is shown that the background pressure in a small mass spectrometer can be kept below 10−6 mbar even with pressures in the main manifold of the order of 10−3 mbar." @default.
- W4238045692 created "2022-05-12" @default.
- W4238045692 date "1989-01-01" @default.
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- W4238045692 title "A new hybrid molecular pump with large throughput" @default.
- W4238045692 doi "https://doi.org/10.1016/0042-207x(89)90276-5" @default.
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