MEANS AND METHOD FOR PRODUCING A VACUUM
Patent
·
OSTI ID:4128784
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
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- United States
- Language:
- English
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