Low background cold cathode ion source for molecular beam detection
- 1 April 1978
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 49 (4) , 449-451
- https://doi.org/10.1063/1.1135446
Abstract
An extractor gauge type electron bombardment ion source using carbon fiber bundles as field electron emitters is described. The cold cathode permits operation of the ionizer within a liquid He cooled cryopump. The high pumping speed for all molecules (except helium) together with its low background pressure make this ion source a very promising detector for crossed molecular beam scattering experiments.Keywords
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