title: Half-life measurements of lutetium-176 using underground HPGe-detectors.
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.
authors.affiliation: 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.
authors.forename: Mikael
authors.initials: M
authors.lastname: Hult
authors.affiliation: SCK•CEN, Boeretang 200, B-2400 Mol, Belgium.
authors.forename: Tim
authors.initials: T
authors.lastname: Vidmar
authors.affiliation: European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, B-2440 Geel, Belgium.
authors.forename: Ulf
authors.initials: U
authors.lastname: Rosengård
authors.affiliation: European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, B-2440 Geel, Belgium.
authors.forename: Gerd
authors.initials: G
authors.lastname: Marissens
authors.affiliation: European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, B-2440 Geel, Belgium.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Lutter
authors.affiliation: TAEK-SANAEM, Ankara, Turkey.
authors.forename: Namik
authors.initials: N
authors.lastname: Sahin
keywords: Lutetium-176; Sum-peak method; Underground laboratory