Results of the CCRI(II)-S12.H-3 supplementary comparison: Comparison of methods for the calculation of the activity and standard uncertainty of a tritiated-water source measured using the LSC-TDCR method

Philippe Cassette; Timotheos Altzitzoglou; Andrei Antohe; Mario Rossi; Arzu Arinc; Marco Capogni; Raphael Galea; Arunas Gudelis; Karsten Kossert; K B Lee; Juncheng Liang; Youcef Nedjadi; Pilar Oropesa Verdecia; Tanya Shilnikova; Winifred van Wyngaardt; Tomasz Ziemek; Brian Zimmerman

doi:10.1016/j.apradiso.2017.07.007

Results of the CCRI(II)-S12.H-3 supplementary comparison: Comparison of methods for the calculation of the activity and standard uncertainty of a tritiated-water source measured using the LSC-TDCR method

Appl Radiat Isot. 2018 Apr:134:257-262. doi: 10.1016/j.apradiso.2017.07.007. Epub 2017 Jul 6.

Authors

Philippe Cassette¹, Timotheos Altzitzoglou², Andrei Antohe³, Mario Rossi⁴, Arzu Arinc⁵, Marco Capogni⁶, Raphael Galea⁷, Arunas Gudelis⁸, Karsten Kossert⁹, K B Lee¹⁰, Juncheng Liang¹¹, Youcef Nedjadi¹², Pilar Oropesa Verdecia¹³, Tanya Shilnikova¹⁴, Winifred van Wyngaardt¹⁵, Tomasz Ziemek¹⁶, Brian Zimmerman¹⁷

Affiliations

¹ CEA, LIST, Laboratoire National Henri Becquerel, LNE-LNHB, CEA-Saclay, 91191 Gif sur Yvette Cedex, France. Electronic address: philippe.cassette@cea.fr.
² European Commission, Joint Research Centre, (JRC), Directorate for Nuclear Safety and Security, Retieseweg 111, B-2440 Geel, Belgium.
³ Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, IFIN-HH, Magurele RO 0-77125, Romania.
⁴ Laboratorio de Metrología de Radioisótopos, CNEA, Argentina.
⁵ National Physical Laboratory, NPL, Queens Road, Teddington, Middlesex TW11 0LW, UK.
⁶ ENEA, National Institute of Ionizing Radiation Metrology, INMRI, Italy.
⁷ National Research Council of Canada (NRC), 1200 Montreal Road, Ottawa, ON, Canada K1A0R6.
⁸ Ionizing Radiation Metrology Laboratory, Center for Physical Sciences and Technology, FTMC, Savanoriu Ave. 231, LT-02300 Vilnius, Lithuania.
⁹ Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany.
¹⁰ Korea Research Institute of Standards and Science, Yuseong, Daejeon 305-340, Republic of Korea.
¹¹ Division of Ionizing Radiation Metrology, National Institute of Metrology, Beijing 100029, China.
¹² Institut de Radiophysique, IRA-METAS, Lausanne, Switzerland.
¹³ Centro de Isótopos (CENTIS), Guanabacoa, La Habana 11100, Cuba.
¹⁴ D.I. Mendeleyev Institute for Metrology (VNIIM), Russia.
¹⁵ Australian Nuclear Science and Technology Organisation, ANSTO, New Illawarra Road, Lucas Heights NSW 2234, Australia.
¹⁶ National Centre for Nuclear Research Radioisotope Centre POLATOM (NCBJ RC POLATOM), Andrzeja Sołtana 7, 05-400 Otwock, Poland.
¹⁷ Physical Measurement Laboratory, National Institute of Standards and Technology (NIST), Gaithersburg, MD, USA.

PMID: 28709738
DOI: 10.1016/j.apradiso.2017.07.007

Abstract

A comparison of calculations of the activity of a ³H₂O liquid scintillation source using the same experimental data set collected at the LNE-LNHB with a triple-to-double coincidence ratio (TDCR) counter was completed. A total of 17 laboratories calculated the activity and standard uncertainty of the LS source using the files with experimental data provided by the LNE-LNHB. The results as well as relevant information on the computation techniques are presented and analysed in this paper. All results are compatible, even if there is a significant dispersion between the reported uncertainties. An output of this comparison is the estimation of the dispersion of TDCR measurement results when measurement conditions are well defined.

Keywords: Activity comparison; LSC; TDCR; Tritium.