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Nonlinear signal transformation in thickness gauging with multiple ionizing-radiation detectors

Journal Article · · Sov. J. Nondestr. Test. (Engl. Transl.); (United States)
OSTI ID:6359002
A maximum signal-to-noise ratio criterion has been established for the conversion of information weights for summed signals in a multidetector device for thickness gauging on sheet materials using a beam of monoenergetic photons with a given attenuation coefficient and a set of detectors with a given configuration. The source field in the detector zone is taken as uniform in the absence of the absorber. A secant transformation is used in the source use factor. The advantage of this optimal conversion is estimated. In using the multidetector system in sheet material gauging to obtain corrections for composition variations the source requirement is either a nuclide with a compound photon spectrum or a set of nuclides such as Am 241 and Co 57.
Research Organization:
Flaw Detection Research Institute, Tomsk (USSR)
OSTI ID:
6359002
Journal Information:
Sov. J. Nondestr. Test. (Engl. Transl.); (United States), Journal Name: Sov. J. Nondestr. Test. (Engl. Transl.); (United States) Vol. 23:10; ISSN SJNTA
Country of Publication:
United States
Language:
English