Kudo T, Tsuchihashi N, Yui T, Mitsugashira T, Kaji H, Yoshihara K
RI Laboratory, Fukushima Medical College, Japan.
Int J Rad Appl Instrum A. 1988;39(2):131-4. doi: 10.1016/0883-2889(88)90158-x.
The counting rate of a sum peak formed by two gamma-ray emissions in radioactive decay of a nuclide depends on its integral attenuation factor G22. Therefore, in the "sum peak method", the G22 value for the specimen in question can be obtained merely from sum peak measurements using one radiation detector when the resolution time and the geometry are fixed. The procedure to determine the G22 values is described for specimens containing 111In, together with the detailed relationships between the sum peak counting rates and the values of G22.
在核素放射性衰变过程中，由两次伽马射线发射形成的和峰的计数率取决于其积分衰减因子G22。因此，在“和峰法”中，当分辨时间和几何条件固定时，仅使用一个辐射探测器通过和峰测量就能获得所研究样品的G22值。本文描述了测定含111In样品G22值的步骤，以及和峰计数率与G22值之间的详细关系。
