Reference drums used in calibration of a plastic scintillation counter in a 4π counting geometry. (March 2016)

• Record Type: Journal Article
• Authors: Yeh, Chin-Hsien; Yuan, Ming-Chen
• Is Part Of: Applied radiation and isotopes. Volume 109(2016:Mar.)
• Page Start: 105
• Page End: 108
• Publication Date: 2016-03
• Subjects: Layered sources -- Rod sources -- Reference drums -- Radioactive waste management; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2015.11.033
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: In this study, two kinds of reference drums were developed. One type was constructed with nine layers of large-area sources filled with different materials having five different densities. The other type of reference drums was constructed with nine rod sources filled with the same materials of different densities. The efficiency calibration of a plastic scintillation counter in 4 π counting geometry using these two kinds of drums showed that rod-source drums resulted in higher counting efficiency than layered source drums. The counting rates obtained from rod-source drums were closer to those obtained from a standard drum with water solution than counting rates from drums with layered sources. The results of this study recommend to use reference drums with rod-sources to compensate the drawbacks of standard drums with water solution of not being able to adjust the density of material. The proposed reference drums improve the accuracy of radioactivity analysis for waste drums of different densities. Highlights: Reference drums with radionuclides of 54Mn, 60Co and 137Cs constructed. Exchangeable source sets of 9 large-area sources and 9 rod sources. Reference drums filled with five materials of different densities. Calibration of counters for waste drums of different densities.