Standardization of 65Zn by sum-peak method.
作者信息
Oliveira E M, Iwahara A, Poledna R, Delgado J U, da Silva C J, da Silva R L, Lopes R T
机构信息
Laboratório Nacional de Metrologia das Radiacões Ionizantes (LNMRI/IRD/CNEN), Av. Salvador Allende, s/n, Recreio, CEP 22780-160 Rio de Janeiro, Brazil.
出版信息
Appl Radiat Isot. 2012 Sep;70(9):2087-90. doi: 10.1016/j.apradiso.2012.02.065. Epub 2012 Feb 25.
A commercial solution of (65)Zn was standardized by the sum peak-method using a planar HPGe detector. The activity results were compared with measurements made with a well type 4πγ ionization chamber, which is traceable to BIPM.RI (II)-K2.Zn-65 key-comparison performed in 2002. The sum-peak value was 42.79 kBq/g and the ionization chamber value was 42.74 kBq/g both at the reference date. The uncertainty obtained in the sum peak standardization was 0.25% (k=1), and in the ionization chamber was 0.85% (k=1). The results showed that sum-peak method can be used in (65)Zn standardization and this method is easier, simpler and more practical than others methods.
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