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ELECTRON TUBES RADIATION RESISTANT PILOT LINE PRODUCTION.
Quarterly progress rept. no. 6, 1 Sep-30 Nov 64,
TUNG-SOL ELECTRIC INC BLOOMFIELD N J
Pagination or Media Count:
The contractual work specified under Phase II has been continued. Fabrication and processing of all four tube types continued, so that sample tubes may be subjected to the various destructive tests specified. High Temperature life testing 500C bulb temperature was concluded on 6080WB Alumino-Silicate tubes, twenty-one now having successfully completed 500 or more hours of operation. Testing of alumino-silicate 6360 tubes was discontinued owing to premature life failure of the entire lot. The 1000-hour steady-state nuclear radiation exposure test was completed on both conventional and alumino-silicate tubes of all four types. The irradiated tubes were too radioactive to test. Thermal shock and moisture resistance tests were run successfully on representative tubes of all four types, in both conventional and alumino-silicate glass. The pulsed radiation exposure test, postponed due to trouble with the associated potted component circuitry, was revised to provide additional information. New approaches are being attempted in an effort to improve the low yield on 5886 and 6205 types meeting initial electrical characteristics. Both of these tubes are running 85 to 90 shrinkage. Radical departures from the present design are being followed in order to eliminate low emission. Author
APPROVED FOR PUBLIC RELEASE