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- W2004966841 abstract "Triple and dual energy γ-ray transmission (TEGAT and DEGAT) techniques were examined to determine nondestructively the purity of gold alloys. The experimental system was composed of a radioactive source 152 Eu (31 MBq) emitting many energies of γ-ray and a high-purity germanium detector having a high-energy resolution. The TEGAT technique suggested that the purity of gold alloys of 1–5 mm thickness can be determined with a precision of more than 99% under an allowance range condition of two karats. By the DEGAT technique, on the other hand, the purity of gold alloys of 3–5 mm thickness could be determined with 95–99% precision under the same condition as above. For the DEGAT technique, it was assumed in this study that the mass attenuation coefficient of silver was equal to that of copper. It was found that the γ-ray transmission techniques can be effectively applied for the measurements of the purities of thick gold alloys which are otherwise impossible to determine by fluorescence X-ray analysis." @default.
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- W2004966841 date "1998-11-01" @default.
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- W2004966841 title "Determination of the Purity of Gold Alloys Using Gamma-Ray Transmisson Techniques" @default.
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- W2004966841 doi "https://doi.org/10.1143/jjap.37.6242" @default.
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