STUDY ON MATERIAL INTERACTION AND MIGRATION IN CAMERA TUBES
Abstract
The image orthicon target was selected for a study of the interaction and migration of materials in camera tubes. A demountable structure was built incorporating matrix cathodes for target testing. The demountable seal permitted conventional exhaust and test processing without special equipment. Storage tests on aluminum oxide targets in tubes made without alkali showed resolution of better than 500 lines after an image storage time of 90 minutes. Equipment was constructed for remote handling of tube parts in a acuum bell jar. The techniques necessary for separate processing of the photosurface, transporting to the tube proper, and then sealing were worked out. Sample photo-diodes and image inten ifier tubes have been assembled in the bell jar. The performance of the vacuum system was extremely good, reaching the 10 to the -7th power mm of Hg in 20 minutes and on the 10 to the -8th power scale in two hours. S-11 and S-20 photosurfaces were made n the titanium ion pumped bell jar. Nor al photoresponses were obtained after initial processing difficulties. Most of the orthicons produced contained storage targets and tri-alkali photosurfaces. Several tubes displayed 200 lines resolution at 3 x 10 to the -7th power foot candles illumination. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1962
- Accession Number
- AD0278042
Entities
People
- Vert Upshaw
Organizations
- Westinghouse Electric Corporation