Evaluation of absolute measurement using a 4π plastic scintillator for the 4πβ−γ coincidence counting method. (April 2018)

• Record Type: Journal Article
• Authors: Unno, Y.; Sanami, T.; Sasaki, S.; Hagiwara, M.; Yunoki, A.
• Is Part Of: Applied radiation and isotopes. Volume 134(2018:Apr.)
• Page Start: 302
• Page End: 306
• Publication Date: 2018-04
• Subjects: Absolute activity measurement -- 4πβ-γ coincidence counting method -- Extrapolation -- Scintillation detector -- Co-60 -- Cs-134 -- Accuracy -- Uncertainty; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2017.10.029
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: Absolute measurement by the 4πβ-γ coincidence counting method was conducted by two photomultipliers facing across a plastic scintillator to be focused on β ray counting efficiency. The detector was held with a through-hole-type NaI(Tl) detector. The results include absolutely determined activity and its uncertainty especially about extrapolation. A comparison between the obtained and known activities showed agreement within their uncertainties. Highlights: Absolute measurement in the 4πβ−γ coincidence counting method was conducted. Evaluation about the extrapolation was discussed. Two-facing photomultiplier for β ray counting by plastic scintillator. Through-hole-type NaI(Tl) scintillation detector for γ ray counting. Agreement between the obtained and known activities within their uncertainty.