Low background cold cathode ion source for molecular beam detection.
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.
Faubel
M
M
Max-Planck-Institut für Strömungsforschung, 34 Göttingen, Germany.
Holber
W M
WM
Toennies
J P
JP
D003080:Cold Temperature; D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007477:Ions; D011874:Radiometry / Q000295:instrumentation*; D014159:Transducers
D007477:Ions