Consistency test of coincidence-summing calculation methods for extended sources

O Sima; A De Vismes Ott; M S Dias; P Dryak; L Ferreux; D Gurau; S Hurtado; P Jodlowski; K Karfopoulos; M F Koskinas; M Laubenstein; Y K Lee; M C Lépy; A Luca; M O Menezes; D S Moreira; J Nikolič; V Peyres; P Saganowski; M I Savva; R Semmler; J Solc; T T Thanh; K Tyminska; Z Tyminski; T Vidmar; I Vukanac; H Yucel

doi:10.1016/j.apradiso.2019.108921

Consistency test of coincidence-summing calculation methods for extended sources

Appl Radiat Isot. 2020 Jan:155:108921. doi: 10.1016/j.apradiso.2019.108921. Epub 2019 Oct 3.

Authors

O Sima¹, A De Vismes Ott², M S Dias³, P Dryak⁴, L Ferreux⁵, D Gurau⁶, S Hurtado⁷, P Jodlowski⁸, K Karfopoulos⁹, M F Koskinas³, M Laubenstein¹⁰, Y K Lee¹¹, M C Lépy¹², A Luca⁶, M O Menezes³, D S Moreira³, J Nikolič¹³, V Peyres¹⁴, P Saganowski¹⁵, M I Savva¹⁶, R Semmler³, J Solc⁴, T T Thanh¹⁷, K Tyminska¹⁵, Z Tyminski¹⁵, T Vidmar¹⁸, I Vukanac¹³, H Yucel¹⁹

Affiliations

¹ Physics Department, University of Bucharest, Bucharest-Magurele, Romania; Horia Hulubei National Institute for R & D in Physics and Nuclear Engineering (IFIN-HH), Bucharest-Magurele, Romania. Electronic address: octavianalexandru.sima@g.unibuc.ro.
² IRSN/LMRE, Orsay, France.
³ Nuclear Metrology Laboratory, Nuclear and Energy Research Institute - IPEN-CNEN/SP, São Paulo, Brazil.
⁴ Czech Metrology Institute, Brno, Czech Republic.
⁵ IRSN / PSE-ENV / SAME / LMN, Vésinet, France.
⁶ Horia Hulubei National Institute for R & D in Physics and Nuclear Engineering (IFIN-HH), Bucharest-Magurele, Romania.
⁷ University of Sevilla, Sevilla, Spain.
⁸ Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Cracow, Poland.
⁹ Greek Atomic Energy Commission, Environmental Radioactivity Monitoring Department, Athens, Greece.
¹⁰ Laboratori Nazionali del Gran Sasso, Istituto Nazionale di Fisica Nucleare, Assergi, Italy.
¹¹ DEN/DANS/DM2S/SERMA, CEA-Saclay, France.
¹² Laboratoire National Henri Becquerel, CEA Saclay, France.
¹³ Laboratory for Radiation Measurements, Department of Radiation and Environmental Protection, Vinča Institute of Nuclear Sciences, Belgrade, Serbia.
¹⁴ Laboratorio de Metrología de Radiaciones Ionizantes, CIEMAT, Madrid, Spain.
¹⁵ Radioisotope Centre, POLATOM, NCBJ, Poland.
¹⁶ INRASTES, National Centre for Scientific Research "Demokritos", Athens, Greece.
¹⁷ University of Science, VNU-HCM, Faculty of Physics & Engineering Physics, Department of Nuclear Physics, Ho Chi Minh City, Viet Nam.
¹⁸ SCK•CEN, Belgian Nuclear Research Centre, Boeretang 200, 2400, Mol, Belgium.
¹⁹ Ankara University, Institute of Nuclear Sciences, Ankara, Turkey.

PMID: 31629294
DOI: 10.1016/j.apradiso.2019.108921

Abstract

An internal consistency test of the calculation of coincidence-summing correction factors F_C for volume sources is presented. The test is based on exact equations relating the values of F_C calculated for three ideal measurement configurations. The test is applied to a number of 33 sets of F_C values sent by 21 teams. Most sets passed the test, but not the results obtained using the quasi-point source approximation; in the latter case the test qualitatively indicated the magnitude of the bias of F_C.

Keywords: Coincidence-summing corrections; Gamma-ray spectrometry; HPGe detector; Self-consistency test.