title: Standardisation of 204Tl at IRMM
abstract: IRMM participated in a recent international comparison for the standardisation of a 204Tl solution organised by BIPM. The activity concentration of the 204Tl solution was measured at IRMM using 3 independent methods; Liquid Scintillation Counting using the CIEMAT/NIST method, 4pi-CsI counting and 4pibeta counting using a large pressurised proportional counter. This article describes the measurements in detail and discusses potential problems in the standardisation of 204Tl.
authors.affiliation: EC-JRC-IRMM, Geel, Belgium. hult@irmm.jrc.be
authors.initials: M
authors.lastname: Hult
authors.initials: T
authors.lastname: Altzitzoglou
authors.initials: B
authors.lastname: Denecke
authors.initials: L
authors.lastname: Persson
authors.initials: G
authors.lastname: Sibbens
authors.initials: DF
authors.lastname: Reher