Low level measurement of $^{60}$Co by gamma ray spectrometry using γ–γ coincidence

H. Paradis (1) , A. de Vismes Ott (1) , M. Luo (1) , X. Cagnat (1) , F. Piquemal (2, 3) , R. Gurriaran (1)

1 IRSN - Institut de Radioprotection et de Sûreté Nucléaire
2 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
3 LSM - UMR 6417 - Laboratoire Souterrain de Modane

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 60Co for certain samples compared to conventional gamma-ray spectrometry due to its very low background.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

H. Paradis, A. de Vismes Ott, M. Luo, X. Cagnat, F. Piquemal, et al.. Low level measurement of $^{60}$Co by gamma ray spectrometry using γ–γ coincidence. 20th International Conference on Radionuclide Metrology and its Applications, Jun 2015, Vienna, Austria. pp.487-492, ⟨10.1016/j.apradiso.2015.11.075⟩. ⟨hal-01991336⟩