title: Standardisation and half-life measurements of (111)In.
abstract: The standardisation of (111)In by 4π(LS)-γ coincidence and anticoincidence counting is presented. Absolute measurements were performed for samples with different concentrations of carrier solution and for different window settings in the gamma channel. The radioactive concentration of the master solution determined on the same reference date was consistent for all measurements performed. The evaluated typical uncertainty was 0.43%. The half-life of (111)In was determined using a time series of measurements performed with an ionisation chamber. A least squares fit of the measured data resulted in a half-life of 2.8067 (34) days consistent with Decay Data Evaluation Project recommended value (0.064% higher than the DDEP value).
authors.affiliation: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Sołtana 7, 05-400 Otwock, Poland. Electronic address: tomasz.dziel@polatom.pl.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Dziel
authors.affiliation: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Sołtana 7, 05-400 Otwock, Poland.
authors.forename: Anna
authors.initials: A
authors.lastname: Listkowska
authors.affiliation: National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Sołtana 7, 05-400 Otwock, Poland.
authors.forename: Zbigniew
authors.initials: Z
authors.lastname: Tymiński
keywords: (111)In; 4π(LS)-γ coincidence and anticoincidence; Half-life measurements; Standardisation