Half-life measurements of lutetium-176 using underground HPGe-detectors

Mikael Hult; Tim Vidmar; Ulf Rosengård; Gerd Marissens; Guillaume Lutter; Namik Sahin

doi:10.1016/j.apradiso.2013.11.071

Half-life measurements of lutetium-176 using underground HPGe-detectors

Appl Radiat Isot. 2014 May:87:112-7. doi: 10.1016/j.apradiso.2013.11.071. Epub 2013 Dec 1.

Authors

Mikael Hult¹, Tim Vidmar², Ulf Rosengård³, Gerd Marissens³, Guillaume Lutter³, Namik Sahin⁴

Affiliations

¹ European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, B-2440 Geel, Belgium. Electronic address: mikael.hult@ec.europa.eu.
² SCK•CEN, Boeretang 200, B-2400 Mol, Belgium.
³ European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, B-2440 Geel, Belgium.
⁴ TAEK-SANAEM, Ankara, Turkey.

PMID: 24360858
DOI: 10.1016/j.apradiso.2013.11.071

Abstract

The half-life of (176)Lu was determined by measuring the (176)Lu activity in metallic lutetium foils. Three different HPGe-detectors located 225 m underground were employed for the study. Measurements using the sum-peak method were performed and resulted in an average massic activity of (52.61±0.36) Bq g(-1). The foils were of natural isotopic abundance so using the massic activity and the value of the natural isotopic abundance of (2.59±0.01)%, a half-life of (3.722±0.029)×10(10)a could be calculated.

Keywords: Lutetium-176; Sum-peak method; Underground laboratory.