MEANS AND METHOD FOR PRODUCING A VACUUM

Patent · Mon Aug 01 00:00:00 EDT 1960

OSTI ID:4128784

Otavka, M A

A new method is given for starting the operation of evapor-ion vacuum pumps. Ordinarily this type of pump is started by inducing an electric field with the vacuum chamber; however, by placing such an electric field in the chamber at the outset, a glow discharge may be initiated which is harmful to the pump. The procedure consists of using a negative electric field during which time only gettering action takes place; subsequently when the field reverses after a sufficient reduction of the number of gaseous particles in the chamber both gettering and ionizing takes place.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-025605
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 2947465
• OSTI ID: 4128784
• Country of Publication: United States
• Language: English

Related Subjects

CLOSURES
ELECTRIC FIELDS
ENGINEERING AND EQUIPMENT
EVAPORATION
GASES
GLOW DISCHARGES
IONIZATION
IONS
LABORATORY EQUIPMENT
OPERATION
PARTICLES
PATENT
PUMPS
TRAPS
VACUUM