ULTRA-HIGH VACUUM METAL PHYSICS MEASUREMENT OF LOW PRESSURES OF OXYGEN. Techincal Report No. 3
Technical Report
·
OSTI ID:4133617
The effects of oxygen reactions with the hot filaments ia a cold cathode ionization gage of Redhead's design were investigated. The usefulness of this gage in measuring low oxygen pressures was evaluated in terms of a hot filament Bayard-Alpert gage. The pumping speed and other highvacuum operating characteristics of a reduced-size cold cathode gage were compared with those of a conventional cold cathode gage. The pumping speed of both gages was high and showed considerable dependence on the pretreatment of the gages. An omegatron mass spectrometer gage was used to investigate the interactions of oxygen at low pressures with hot filaments. The dependence of the production of CO and CC/sub 2/ on filament composition and temperature was studied. Production of CO was promoted by carbon contained in the filaments, by high filament temperatures, and by the accelerating potentials used in operating hot filament gages. (auth)
- Research Organization:
- Cornell Univ., Ithaca, N.Y.
- NSA Number:
- NSA-15-001476
- OSTI ID:
- 4133617
- Report Number(s):
- NP-9389
- Country of Publication:
- United States
- Language:
- English
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