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U.S. Department of Energy
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Development of beta backscatter probes using high-intensity sources

Technical Report ·
OSTI ID:5147953
A beta-backscatter probe has been developed using a Pm-147 high-flux source (activity rate of 7.4 giga disintegrations/second or 200 millicuries) along with a scintillation-type detector to make thickness measurements of PVD and rolled-foil aluminium having 0.5 percent accuracy in a time interval of 10 seconds. Surface-barrier detectors failed to provide significant improvement over the existing Geiger system. In all tests, the scintillation probe used in the current mode of operation proved to be more stable and superior to the Geiger and surface-barrier detector systems.
Research Organization:
Bendix Corp., Kansas City, Mo. (USA)
DOE Contract Number:
EY-76-C-04-0613
OSTI ID:
5147953
Report Number(s):
BDX-613-1903(Rev.)
Country of Publication:
United States
Language:
English