DEVELOPMENT OF AN ELECTRONOGRAPHIC IMAGE TUBE.
Abstract
One of the tubes developed was a cesium free tube in which the photocathode was processed outside the tube and inserted when the tube was placed in operation. The other tube consisted of a 'normal' single stage tube in which great care was exercised to reduce field emission. Tubes both with and without an Al2O3 foil to separate the cathode from the plate chamber were made. The former had a very long life and extremely low background. The tube without foil and with cryogenic pumping had a shorter and variable life. The first tube without foil decreased to 85% of its original sensitivity in 5 days. Shift of the image by both the earth's magnetic field and possibly by a charging within the tube were observed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 20, 1963
- Accession Number
- AD0611627
Entities
People
- W. A. Hiltner