title: A new method for determining the efficiency of large-area beta sources constructed from anodized aluminum foils.
abstract: A new method has been developed for determining the efficiency of large-area beta sources in anodized aluminum foils using transmission measurements. The method was applied to the efficiency measurement of a (90)Sr-(90)Y large-area reference source. Measurement results show that the method can provide efficiency values for (90)Sr-(90)Y reference sources with standard uncertainties smaller than 2.9%, which are far below the limit of 10% required by ISO 8769.
authors.affiliation: National Institute of R&D for Physics and Nuclear Engineering Horia Hulubei, IFIN-HH, P.O. Box MG-6, Bucharest-Magurele R-077125, Romania. doru@ifin.nipne.ro
authors.forename: D
authors.initials: D
authors.lastname: Stanga
authors.forename: F J
authors.initials: FJ
authors.lastname: Maringer
authors.forename: E
authors.initials: E
authors.lastname: Ionescu