Standardisation of 85Sr with digital anticoincidence counting and half-life determination of the 514 keV level of 85Rb

Marcell P Takács; Karsten Kossert; Ole J Nähle

doi:10.1016/j.apradiso.2019.07.004

Standardisation of ⁸⁵Sr with digital anticoincidence counting and half-life determination of the 514 keV level of ⁸⁵Rb

Appl Radiat Isot. 2019 Nov:153:108799. doi: 10.1016/j.apradiso.2019.07.004. Epub 2019 Jul 3.

Authors

Marcell P Takács¹, Karsten Kossert², Ole J Nähle²

Affiliations

¹ Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116, Braunschweig, Germany. Electronic address: [email protected].
² Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116, Braunschweig, Germany.

PMID: 31326792
DOI: 10.1016/j.apradiso.2019.07.004

Abstract

The activity of a ⁸⁵Sr solution was determined by means of fully digital 4πβ(LS)-γ anticoincidence counting. The measurements were carried out in a custom-built, combined TDCR / 4πβ(LS)-γ coincidence system, utilising a commercially available CAEN N6751C digitizer. The analysis of the experimental data, collected in list-mode format, was performed off-line by using the SoftKAM computer code developed at PTB. The data were also used to determine the half-life of the 514 keV level of ⁸⁵Rb which was found to be (1020.2 ± 6.0) ns.

Keywords: (85)Sr; 4πβ(LS)-γ anticoincidence counting; Activity standardisation; Digitizer; Half-life of excited state; LSC.