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- W4246294259 abstract "This work investigates the use of annihilation photons from gamma-ray-induced electron-positron pair production to inspect objects when only one side is accessible. The Z/sup 2/-dependence of the pair-production cross section and the high penetration of 511-keV photons allow this method to differentiate high-Z materials in low-Z matrices. The experimental results for the dependence of the back-streaming photon yield on Z shows a factor of 20 increase for elements over the range 4<Z<82. Results for point-by-point images obtained in line scans of representative geometries are also shown. Comparisons of experimental data and simulation studies based on the EGS4 Monte Carlo code agree to within 5%." @default.
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- W4246294259 date "2002-11-22" @default.
- W4246294259 modified "2023-09-27" @default.
- W4246294259 title "One-sided imaging of large, dense objects using 511-keV photons from induced-pair production" @default.
- W4246294259 doi "https://doi.org/10.1109/nssmic.1997.672611" @default.
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