Wang Zilu, Zhang Ming, Tuo Fei, Zhang Zhenzhen, Liang Juncheng
National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, 100088, China; National Institute of Metrology, Beijing, 100029, China.
National Institute of Metrology, Beijing, 100029, China.
Appl Radiat Isot. 2020 Dec;166:109342. doi: 10.1016/j.apradiso.2020.109342. Epub 2020 Jul 24.
In this paper, standardization of the activity concentration of gaseous beta-emitting radionuclide Kr 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 E = 514 keV with standardized Kr source in a given geometrical container is presented.
本文介绍了气态β发射放射性核素氪活度浓度的标准化。测量是在中国计量科学研究院（NIM）新建立的基准上进行的，该基准由一组不同长度的内部气体正比计数器组成。还制备了适用于高纯锗γ射线能谱测量的样品，并给出了在给定几何容器中使用标准化氪源在E = 514 keV能量下的效率校准。
