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Standardization of krypton-85 and its calibration on HPGe gamma-ray spectrometer
Zilu Wang1, Ming Zhang2, Fei Tuo3
1National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, 100088, China; National Institute of Metrology, Beijing, 100029, China.
Abstract:
In this paper, standardization of the activity concentration of gaseous beta-emitting radionuclide 85Kr is introduced. The measurement was performed at the recent-established primary standard at the National Institute of Metrology of China (NIM), which consists of a set of internal gas proportional counters of different length. Samples suitable for High Purity Germanium gamma-ray spectrometry measurement were also prepared, and efficiency calibration at an energy of Eγ = 514 keV with standardized 85Kr source in a given geometrical container is presented.
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