Determination of 137Cs half-life with an ionization chamber. (December 2016)

• Record Type: Journal Article
• Authors: Juget, Frédéric; Nedjadi, Youcef; Buchillier, Thierry; Bochud, François; Bailat, Claude
• Is Part Of: Applied radiation and isotopes. Volume 118(2016:Dec.)
• Page Start: 215
• Page End: 220
• Publication Date: 2016-12
• Subjects: Ionization chamber -- Half-life -- 137Cs -- Uncertainty evaluation -- Decay measurements; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2016.09.002
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: The half-life of 137 Cs was measured with an ionization chamber by following the decay of 5 sources over a 30 years period between 1983 and 2013. The ratio between the ionization chamber current for the cesium sources and 226 Ra source was used for the half-life calculation. The value found for the 137 Cs half-life is 10, 955.2±10.7 days, where the uncertainty evaluation combines type A and B for one standard deviation. Highlights: Decay measurements of 137 Cs for a period of 30 years. Uncertainty estimation for measurements of the ionization chamber current. Fitting procedure for half-life determination. Comparison of 137 Cs half-life with the recommended DDEP value and with previous measurements.