Activity standardisation of <sup>32</sup>Si at IRA-METAS.
Détails
Télécharger: 37776633.pdf (8471.10 [Ko])
Etat: Public
Version: Final published version
Licence: CC BY 4.0
Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_7B8D785277E9
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Activity standardisation of <sup>32</sup>Si at IRA-METAS.
Périodique
Applied radiation and isotopes
ISSN
1872-9800 (Electronic)
ISSN-L
0969-8043
Statut éditorial
Publié
Date de publication
12/2023
Peer-reviewed
Oui
Volume
202
Pages
111041
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Résumé
This work explores the primary activity standardisation of <sup>32</sup> Si as part of the SINCHRON project that aims at filling the geochronological dating gap by making a new precise measurement of the half-life of this nuclide. The stability of some of the radioactive test solutions, providing <sup>32</sup> Si as hexafluorosilicic acid (H <sub>2</sub> <sup>32</sup> SiF <sub>6</sub> ), was monitored over long periods, pointing to the adequate sample composition and vial type to ensure stability. These solutions were standardised using liquid scintillation counting with the triple to double coincidence ratio (TDCR) technique and the CIEMAT-NIST efficiency tracing (CNET) method. Complementary backup measurements, using 4πβ-γ coincidence counting with <sup>60</sup> Co as a tracer, were performed with both liquid and plastic scintillation for beta detection. While <sup>60</sup> Co coincidence tracing with a liquid scintillator predicted activities in agreement with the TDCR and CNET determinations, using plastic scintillation turned out to be unfeasible as the addition of lanthanum nitrate and ammonia to fix the silicon during the drying process generated large crystals that compromised the linearity of the efficiency function.
Mots-clé
(32)p, (32)s, 4πβ-γ coincidence tracing, Activity standardisation, Ciemat-nist, Liquid scintillation, Plastic scintillation, Tdcr, (32)P, (32)S, CIEMAT-NIST, TDCR
Pubmed
Web of science
Open Access
Oui
Création de la notice
06/10/2023 13:18
Dernière modification de la notice
13/12/2023 7:19