IRRADIATION OF A TELEMETERING SYSTEM AND RELATED RECONNAISSANCE SENSORS
The work performed in modifying, instrumenting, and irradiating a minimum telemetering system, and in evaluating the possible use of xerographic storage plates and photomultipliers in a nuclear radiation environment is described. A partially hardened 230 Mc telemetering subsystem consisting of ten sensors, two SCO's, mixer amplifier, FM/FM transmitter, and PM/FM transmitter was dynamically irradiated at the 3 Mw Ground Test Reactor (GTR) for 100 continuous hours during September 1961. The average integrated nuclear radiation exposure for the subsystem was 3.0 x 10/sup 16/ n/sub f//cm/sup 2/ (nE > 1.0 Mev) and 8.0 x 10/sup 10/ ergs/gm-(C). Failure of the low pass filters in the two SCO's occurred after an exposure of 4.0 x 10/sup 14/ n/sub f//cm/sup 2/ (nE > 1.0 Mev), 1.3 x 10/sup 9/ ergs/cm-(C). Transmitter output power of the FM/FM and PM/FM transmitters failed after an exposure of 6.0 x 10/sup 15/ n/sub f//cm/sup 2/ (nE > 1.0 Mev), 2.0 x 10/sup 10/ ergs/gm(C) and 3.0 x 10/sup 14/ n/sub f//cm/sup (nE > 1.0), 8.0 x 10/sup 8/ ergs/gm-(C), respectively. There was no gross change in dark resistivity of a photosensitive amorphus selenium (xerographic) detector after exposure in the GTR's 27/8 inch square pneumatic tube to 1.1 x 10/sup 8/ n/ sub f//cm/sup 2/-sec (nE > 1.0 Mev) 2.1 x 10/sup 7/ ergs/gm-hr(C) for ten minutes. Four photomultiplier tubes were dynamically irradiated in General Dynamics' 3000 curie Co/sup 60/ gamma source on October 1, 1961, to investigate the degree of gamma photon induced dark current saturation. Both types of phototubes exhibited stable response to high light stimuli in a nuclear environment of 2.0 x 10/sup 7/ ergs/gmhr(C). (auth)
- Research Organization:
- Chance Vought Corp., Dallas
- DOE Contract Number:
- AF33(657)-7229
- NSA Number:
- NSA-16-031812
- OSTI ID:
- 4786677
- Report Number(s):
- ASD-TDR-62-420; AD-283351
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-62
- Country of Publication:
- United States
- Language:
- English
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