Activity standardisation of <sup>161</sup>Tb.

Details

Serval ID
serval:BIB_7073B212C622
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Activity standardisation of <sup>161</sup>Tb.
Journal
Applied radiation and isotopes
Author(s)
Nedjadi Y., Juget F., Desorgher L., Durán M.T., Bochud F., Müller C., Talip Z., van der Meulen N.P., Bailat C.
ISSN
1872-9800 (Electronic)
ISSN-L
0969-8043
Publication state
Published
Issued date
10/09/2020
Peer-reviewed
Oui
Volume
166
Pages
109411
Language
english
Notes
Publication types: Journal Article
Publication Status: aheadofprint
Abstract
<sup>161</sup> Tb, which emits low-energy β <sup>-</sup> - and γ-particles in addition to conversion and Auger electrons, has aroused increased interest for medical imaging and therapy. To support the use of this radionuclide, a <sup>161</sup> Tb solution was standardised using the β-γ coincidence technique, as well as the TDCR method. The solution had 4.5·10 <sup>-3</sup> % of <sup>160</sup> Tb impurities. Primary coincidence measurements, with plastic or liquid scintillators for beta detection, were carried out using both analogue and digital electronics. TDCR measurements using defocusing, grey filtering and quenching for varying the efficiency were also made. Monte Carlo calculations were used to compute the detection efficiency. The coincidence measurements with analogue electronics and the TDCR show a good consistency, and are compatible with the digital coincidence results within uncertainties. An ampoule of this solution was submitted to the BIPM as a contribution to the international reference system.
Keywords
(160)Tb, (161)Tb, 4πβ-γ coincidence counting, Activity standardisation, Liquid scintillation, Plastic scintillation, TDCR
Pubmed
Create date
26/09/2020 16:26
Last modification date
02/03/2021 7:26
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