Evacuation by zeolite pump of electron gun with foil window

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · Instrum. Exp. Tech. (Engl. Transl.); (United States)

OSTI ID:5961918

Grigor'ev, Yu V; Stepanov, A V

It was shown that an adsorption pump can be used to maintain a working vacuum in a dismountable electron gun with output of a wide beam through a foil window. The gun had a directly heated tungsten cathode, a foil window area of 280 cm/sup 2/, an inner volume of 20 liters, and a total length of vacuum rubber seals of 4 meters. The adsorption pump contained 0.7 kg of grade 5A zeolite. After storage for 60 hours the operating time of the gun at 125 KeV and 20 mA was 1.5 hours and was limited by reduction of the pump evacuation rate. The preparation time of the gun was 7.5 hours before storage and 1 hour after storage. Gun preparation and startup values are tabulated.

• Research Organization: All-Union Electrical Engineering Institute, Moscow (USSR)
• OSTI ID: 5961918
• Journal Information: Instrum. Exp. Tech. (Engl. Transl.); (United States), Journal Name: Instrum. Exp. Tech. (Engl. Transl.); (United States) Vol. 30:6; ISSN INETA
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADSORPTION
BEAM CURRENTS
BEAMS
CURRENTS
ELECTRON BEAMS
ELECTRON GUNS
ENERGY RANGE
EQUIPMENT
FOILS
GETTERING
GETTERS
IMPURITIES
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KEV RANGE
KEV RANGE 100-1000
LABORATORY EQUIPMENT
LEPTON BEAMS
MATERIALS
MATERIALS TESTING
MILLI AMP BEAM CURRENTS
MINERALS
PARTICLE BEAMS
PERFORMANCE
PUMPS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TESTING
VACUUM PUMPS
VACUUM SYSTEMS
ZEOLITES