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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 973 records · Page 54

Low-energy gamma ray inspection of brazed aluminum joints

Americium 241 serves as a suitable radioisotope /gamma ray source/ and exposure probe for radiographic inspection of brazed aluminum joints in areas of limited accessibility. The powdered isotope is contained in a sealed capsule mounted at the end of a spring-loaded pushrod in the probe assembly.

Brown, J. A.↗

Silicon surface barrier detectors used for liquid hydrogen density measurement

Multichannel system employing a radioisotope radiation source, strontium-90, radiation detector, and a silicon surface barrier detector, measures the local density of liquid hydrogen at various levels in a storage tank. The instrument contains electronic equipment for collecting the density information, and a data handling system for processing this information.

James, D. T.↗

Summary, volume 1 Final report

Voyager project study summaries on spacecraft powered by radioisotope thermoelectric generators, planetary quarantine, redundancy, and data management and control

Oleary, K. C.↗