Orbitron Vacuum Pump
- 1 January 1965
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 36 (1) , 1-6
- https://doi.org/10.1063/1.1719315
Abstract
A pump was constructed in a casing 10 cm in diam in which electrons are orbited around a central anode consisting of a tungsten rod supporting a titanium cylinder. Electrons have mean free paths of several hundred centimeters, they ionize inert gas and they heat the titanium cylinder to give sublimation. Some values determined for pumping speeds when sublimation rate is sufficient are 900 liters/sec for hydrogen, 500 liters/sec for nitrogen, 300 liters/sec for air, and 7 liters/sec for argon. Sticking probabilities were measured for active gases and for inert gas ions as a function of the ratio of atoms of gas bound to atoms of titanium deposited. The pump is very stable in operation; it is simple and dependable.Keywords
This publication has 2 references indexed in Scilit:
- Orbitron Ionization GaugeReview of Scientific Instruments, 1964
- Charged Particle Orbits in a Logarithmic PotentialJournal of Applied Physics, 1963