Control of pyrophoricity in deposits produced by electron beam e

Details Control of pyrophoricity in deposits produced by electron beam e Control of pyrophoricity in deposits produced by electron beam e

1978-01-09

1980-07-01

Dixon, Harold A.

Radiant energy

Ion generation

Electron bombardment type

250284, 250423P, H01J 2700

Patent

active

042108144

ABSTRACT:
Apparatus to reduce pyrophoricity in deposits collected upon collection plates within a chamber employed for vapor deposition. The apparatus is preferably employed in a chamber utilized for isotopically selective photoexcitation, ionization and separation of metallic uranium vapor. The uranium vapor which collects on all surfaces exposed to it within the chamber is caused to collect in a relatively dense, non-porous body by maintaining a suitably elevated temperature for those surfaces while at the same time keeping the chamber itself cooled. The elevated temperature is achieved by baffles shielding the collection plates from the cooler chamber walls to reduce thermal radiation thereto and/or by applying additional thermal energy to the plates.

REFERENCES:
patent: 3758777 (1973-09-01), Brunnee
patent: 3772519 (1973-11-01), Levy et al.
patent: 3939354 (1976-02-01), Janes
patent: 4039828 (1977-08-01), Pokar
patent: 4090086 (1978-05-01), Cranberg

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