Primary Standardization of 152Eu by 4πβ(LS) -γ (NaI) coincidence counting and CIEMAT-NIST method

被引：0
|
作者：
Ruzzarin, A. [1 ]
da Cruz, P. A. L. [2 ]
Ferreira Filho, A. L. [2 ]
Iwahara, A. [2 ]
机构：
[1] Univ Fed Rio de Janeiro, LIN, PEN,COPPE, Inst Alberto Luiz Coimbra Posgrad Pesquisa Engn, BR-21945972 Rio De Janeiro, Brazil
[2] CNEN, IRD, LNMRI, Ave Salvador Allende S-No, BR-22783127 Rio De Janeiro, Brazil
来源：
9TH BRAZILIAN CONGRESS ON METROLOGY (METROLOGIA 2017) | 2018年 / 975卷
关键词：
D O I：
10.1088/1742-6596/975/1/012062
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The 4 pi beta-gamma coincidence counting and CIEMAT/NIST liquid scintillation method were used in the standardization of a solution of Eu-152. In CIEMAT/NIST method, measurements were performed in a Liquid Scintillation Counter model Wallac 1414. In the 4 pi beta-gamma coincidence counting, the solution was standardized using a coincidence method with "beta-efficiency extrapolation". A simple 4 pi beta-gamma coincidence system was used, with acrylic scintillation cell coupled to two coincident photomultipliers at 180 degrees each other and NaI(Tl) detector. The activity concentrations obtained were 156.934 +/- 0.722 and 157.403 +/- 0.113 kBq/g, respectively, for CIEMAT/NIST and 4 pi beta-gamma coincidence counting measurement methods.
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页数：6
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