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

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

Author information

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.

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

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