Abstract

In a sealed ultrahigh-vacuum glass system incorporating a Bayard–Alpert-type ionization gauge at a total pressure of ∼10−10 Torr (obtained with an oil diffusion pump, mechanical fore-pump, and nonrefrigerated trap), it is demonstrated that by turning off the electron accelerating potential (or all gauge potentials) of the ionization gauge, the gas ambient of the system is perturbed by the desorption of Ar from the gauge surfaces. Partial pressure gas measurements are made with an omegatron mass spectrometer. The quantity and rate of Ar desorption is related in a complex way to the previous history of the system. Experimental data for some representative systems are presented.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.