title: Radioxenon standards used in laboratory inter-comparisons.
abstract: Preparation methods for (133)Xe standards of activity concentration and the results of the 2014 (133)Xe laboratory inter-comparison exercise are described. One element of the quality assurance/quality control (QA/QC) program for laboratories of the International Monitoring System (IMS) will be regular inter-comparison exercises. However, until recently, no activity concentration standards for benchmarking were available. Therefore, two (133)Xe activity concentration reference standards were produced independently by Idaho National Laboratory and Seibersdorf Laboratories and used for the 2014 laboratory inter-comparison exercise. The preparation of a complementary (127)Xe activity concentration standard as well as a (127)Xe laboratory inter-comparison exercise suggests (127)Xe as a suitable isotope for QA/QC of remote IMS noble gas stations.
authors.affiliation: CTBTO Preparatory Commission, Austria. Electronic address: herbert.gohla@ctbto.org.
authors.forename: H
authors.initials: H
authors.lastname: Gohla
authors.affiliation: CTBTO Preparatory Commission, Austria.
authors.forename: M
authors.initials: M
authors.lastname: Auer
authors.affiliation: Laboratoire National Henri Becquerel, France.
authors.forename: Ph
authors.initials: P
authors.lastname: Cassette
authors.affiliation: Idaho National Laboratory, United States.
authors.forename: R K
authors.initials: RK
authors.lastname: Hague
authors.affiliation: Seibersdorf Laboratories, Austria.
authors.forename: M
authors.initials: M
authors.lastname: Lechermann
authors.affiliation: CTBTO Preparatory Commission, Austria.
authors.forename: B
authors.initials: B
authors.lastname: Nadalut
keywords: (127)Xe; (131m)Xe; (133)Xe; (133m)Xe; (135)Xe; Comprehensive Nuclear–Test–Ban Treaty (CTBT); Environmental monitoring; International Monitoring System (IMS); Noble gas; QA/QC program; Radioxenon standards