On the photomultiplier-tube asymmetry in TDCR systems.
Asymmetry
Complex decay schemes
International comparisons
Photomultiplier tube
TDCR
Journal
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
ISSN: 1872-9800
Titre abrégé: Appl Radiat Isot
Pays: England
ID NLM: 9306253
Informations de publication
Date de publication:
Sep 2020
Sep 2020
Historique:
received:
05
03
2020
revised:
20
04
2020
accepted:
07
05
2020
entrez:
21
6
2020
pubmed:
21
6
2020
medline:
21
6
2020
Statut:
ppublish
Résumé
The responses of the three photomultiplier tubes (PMTs) in a triple-to-double coincidence ratio (TDCR) liquid scintillation (LS) system are often not identical. Such asymmetries can have a significant influence on activity determinations. The problem is often solved by means of a minimization algorithm which can easily be applied when analytical methods are used for the efficiency calculation, as is usually done for pure beta emitters. However, for radionuclides with more complex decay schemes, the counting efficiencies are often calculated with stochastic methods and the computation of the required corrections becomes very challenging. This paper presents a new numerical method to overcome the asymmetry problem for such complex decays and a comprehensive study on
Identifiants
pubmed: 32561059
pii: S0969-8043(20)30352-3
doi: 10.1016/j.apradiso.2020.109223
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
109223Informations de copyright
Copyright © 2020 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.