Standardisation and half-life measurements of (111)In

Tomasz Dziel; Anna Listkowska; Zbigniew Tymiński

doi:10.1016/j.apradiso.2015.11.105

Standardisation and half-life measurements of (111)In

Appl Radiat Isot. 2016 Mar:109:345-348. doi: 10.1016/j.apradiso.2015.11.105. Epub 2015 Nov 28.

Authors

Tomasz Dziel¹, Anna Listkowska², Zbigniew Tymiński²

Affiliations

¹ National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Sołtana 7, 05-400 Otwock, Poland. Electronic address: tomasz.dziel@polatom.pl.
² National Centre for Nuclear Research Radioisotope Centre POLATOM, Andrzeja Sołtana 7, 05-400 Otwock, Poland.

PMID: 26651174
DOI: 10.1016/j.apradiso.2015.11.105

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).

Keywords: (111)In; 4π(LS)-γ coincidence and anticoincidence; Half-life measurements; Standardisation.