Accession Number:

AD0611627

Title:

DEVELOPMENT OF AN ELECTRONOGRAPHIC IMAGE TUBE.

Descriptive Note:

Final rept. for 1 Dec 58-31 Oct 63,

Corporate Author:

YERKES OBSERVATORY WILLIAMS BAY WIS

Personal Author(s):

Report Date:

1963-11-20

Pagination or Media Count:

10.0

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 earths magnetic field and possibly by a charging within the tube were observed. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE