Low level measurement of 60Co by gamma ray spectrometry using γ–γ coincidence. (March 2016)

• Record Type: Journal Article
• Authors: Paradis, H.; de Vismes Ott, A.; Luo, M.; Cagnat, X.; Piquemal, F.; Gurriaran, R.
• Is Part Of: Applied radiation and isotopes. Volume 109(2016:Mar.)
• Page Start: 487
• Page End: 492
• Publication Date: 2016-03
• Subjects: Gamma-ray spectrometry -- Low level radioactivity -- Gamma-gamma coincidence -- Ge -- NaI(Tl); Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2015.11.075
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: This paper presents the latest development of the laboratory to measure the natural and artificial massic activities in environmental samples. The measurement method of coincident emitters by gamma–gamma coincidence using an anti-Compton device and its digital electronics is described. Results obtained with environmental samples are shown. Despite its low efficiency, this method decreases detection limits of 60 Co for certain samples compared to conventional gamma-ray spectrometry due to its very low background. Highligths: New measurement method with gamma-ray spectrometry in gamma–gamma coincidence. Efficiency calibration by standard sources and bay MCNP_CP simulation. Decrease of detection limits for 60 Co by a factor of 10 in biological matrices.