title: An advanced method of activity determination of large area beta emitting sources.
abstract: The presented advanced method of activity determination of large area beta emitting sources is based on a version of efficiency tracing method using a test foil placed between the source and a conventional large area detector. It is shown that the total efficiency of the measuring system may depend on a dimensionless parameter derived from the difference in count rates caused by inserting the test foil while other disturbing effects are mostly reduced or compensated.
authors.affiliation: Slovak Institute of Metrology, Karloveská 63, 842 55 Bratislava, Slovak Republic.
authors.forename: Andrej
authors.initials: A
authors.lastname: Javorník
authors.affiliation: Slovak Institute of Metrology, Karloveská 63, 842 55 Bratislava, Slovak Republic. Electronic address: svec@smu.gov.sk.
authors.forename: Anton
authors.initials: A
authors.lastname: Svec
keywords: Absorption; Area source; Large area detector; Radionuclide activity