Long-lived gamma-radionuclidic impurities in spent Mo-99/Tc-99m generators
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The long-lived gamma-radionuclidic impurities in the columns of spent Mo-99/Tc-99m generators one year after the calibration date have been determined by v-spectrometry. Three radionuclidic impurities fission products (Ru-103, Ru-106 and Sb-125) were detected. Also in the majority of samples, three radioisotopes of tungsten (W-181, W-185 and W-188) were also present. The contents of the impurities were found to vary,greatly. According to the activity, energy and half-life, the main contribution to the residual activity in the spent generators is due to the presence of Sb-125.
Извор:Journal of Radioanalytical and Nuclear Chemistry - Letters, 1996, 212, 3, 221-227
ISSN: 0236-5731 (print)