title: Low level measurement of (60)Co by gamma ray spectrometry using γ-γ coincidence.
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.
authors.affiliation: Laboratoire de Mesure de la Radioactivité dans l'Environnement, IRSN, Orsay, France. Electronic address: hugues.paradis@irsn.fr.
authors.forename: H
authors.initials: H
authors.lastname: Paradis
authors.affiliation: Laboratoire de Mesure de la Radioactivité dans l'Environnement, IRSN, Orsay, France.
authors.forename: A
authors.initials: A
authors.lastname: de Vismes Ott
authors.affiliation: Laboratoire de Mesure de la Radioactivité dans l'Environnement, IRSN, Orsay, France.
authors.forename: M
authors.initials: M
authors.lastname: Luo
authors.affiliation: Laboratoire de Mesure de la Radioactivité dans l'Environnement, IRSN, Orsay, France.
authors.forename: X
authors.initials: X
authors.lastname: Cagnat
authors.affiliation: Centre Etudes Nucléaires de Bordeaux Gradignan, CNRS/IN2P3, Gradignan, France; LSM, Laboratoire Souterrain de Modane, Modane, France.
authors.forename: F
authors.initials: F
authors.lastname: Piquemal
authors.affiliation: Laboratoire de Mesure de la Radioactivité dans l'Environnement, IRSN, Orsay, France.
authors.forename: R
authors.initials: R
authors.lastname: Gurriaran
keywords: Gamma-gamma coincidence; Gamma-ray spectrometry; Ge; Low level radioactivity; NaI(Tl)