Standardisation and precise determination of the half-life of 44Sc

被引：22
|
作者：
Garcia-Torano, E. [1 ]
Peyres, V. [1 ]
Roteta, M. [1 ]
Sanchez-Cabezudo, A. I. [1 ]
Romero, E. [2 ]
Martinez Ortega, A. [2 ]
机构：
[1] CIEMAT, Lab Metrol Radiac Ionizantes, Avda Complutense 40, E-28040 Madrid, Spain
[2] CIEMAT, Unidad Aplicac Biomed & Farmacocinet, Avda Complutense 40, E-28040 Madrid, Spain
来源：
APPLIED RADIATION AND ISOTOPES | 2016年 / 109卷
关键词：
Sc-44; Half-life; Standardisation; Positron emitters; RADIONUCLIDE; SCANDIUM;
D O I：
10.1016/j.apradiso.2015.12.007
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The half-life of the positron-emitter Sc-44 has been determined by following the decay rate with two measurement systems; an Ionisation Chamber and a HPGe detector. The combination of seven results gives a value of T-1/2=4.042 (25) h, about 2% higher than the recommended value of T-1/2=3.97 (4) h (Browne, 2011) and with a lower uncertainty. This radionuclide has also been standardised by coincidence counting, and liquid scintillation counting techniques. A Ti-44/Sc-44 generator developed at CIEMAT was used to obtain the Sc-44 solutions used in all measurements. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：314 / 318
页数：5
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