Activity standardization by liquid scintillation counting and half-life measurements of 90Y

被引：33
|
作者：
Kossert, K [1 ]
Schrader, H [1 ]
机构：
[1] Phys Tech Bundesanstalt, Dept 6 1, D-38116 Braunschweig, Germany
来源：
APPLIED RADIATION AND ISOTOPES | 2004年 / 60卷 / 05期
关键词：
liquid scintillation counting; CIEMAT/NIST method; ionization chamber; half-life measurement; Y-90; radionuclide impurity;
D O I：
10.1016/j.apradiso.2003.12.009
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Radioactive Y-90 was standardized by means of 47pibeta liquid scintillation efficiency tracing with a two-phototube counting system. The efficiencies of Y-90 and the tracer H-3 are related by the CIEMAT/NIST method. The dependence of the calculated efficiency on various shape factors and the importance of accurately measuring the radionuclide impurity of Sr-90 are discussed. The half-life of Y-90 was measured with improved accuracy by means of a liquid scintillation counting and a 4pi ionization chamber measuring system, and an average value T-1/2 = 64.053(20) h was found. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：741 / 749
页数：9
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