title: A simple method for determining the activity of large-area beta sources constructed from anodized aluminum foils.
abstract: A simple method has been developed for determining the activity of large-area beta reference sources in anodized aluminum foils. It is based on the modeling of the transmission of beta rays through thin foils in planar geometry using Monte Carlo simulation. The method was checked experimentally and measurement results show that the activity of large-area beta reference sources in anodized aluminum foils can be measured with standard uncertainties smaller than the limit of 10% required by ISO 8769.
authors.affiliation: National Institute of R&D for Physics and Nuclear Engineering "HoriaHulubei", IFIN-HH, P.O.Box MG-6, Bucharest-Magurele R-077125, Romania. Electronic address: doru@ifin.nipne.ro.
authors.forename: D
authors.initials: D
authors.lastname: Stanga
keywords: Large-area reference sources; Method of measurement; Planar geometry