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- W2382148967 abstract "Tomographic gamma scanning(TGS) method is one of the most advanced non-destructive assay(NDA) method and widely used to assay the location and quantity of selected radioisotopes in scraps and wastes within sealed containers.TGS method can determine quantitatively with high accuracy transuranic nuclides in heterogeneously distributed media with medium-and high-density.In the paper,we begin a prior investigation on TGS technology in China.Considering the characteristics of TGS,three key techniques,the detection efficiency calibration,the accurate reconstruction methods of TGS transmission image and fast reconstruction techniques of TGS emission image,are researched deeply both in simulation and experimental aspects.Calibration of the TGS equipment is solved with MC method.A MC statistical iteration method is proposed for reconstructing transmission image.A formula is deduced to calculate the correction factor of linear attenuation.Algebra iteration method is used for reconstructing emission image in the emission measurement.At the same time,the pre-calculation method is used during reconstructing TGS emission image for saving computation time.Computer simulation and experimental results show that the relative errors,between reconstruction values of TGS images and reference values,are less than 10%.Therefore,having solved the three key techniques in TGS establishes foundation for developing TGS apparatus in China." @default.
- W2382148967 created "2016-06-24" @default.
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- W2382148967 date "2010-01-01" @default.
- W2382148967 modified "2023-09-24" @default.
- W2382148967 title "Research on tomographic gamma scanning technique" @default.
- W2382148967 hasPublicationYear "2010" @default.
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