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Development of methods for the preparation of radiopure 82Se sources for the SuperNEMO neutrinoless double-beta decay experiment

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Title: Development of methods for the preparation of radiopure 82Se sources for the SuperNEMO neutrinoless double-beta decay experiment
Authors: Rakhimov, A
Barabash, AS
Basharina-Freshville, A
Blot, S
Bongrand, M
Bourgeois, C
Breton, D
Breier, R
Birdsall, E
Brudanin, VB
Buresova, H
Busto, J
Calvez, S
Cascella, M
Cerna, C
Cesar, JP
Chauveau, E
Chopra, A
Claverie, G
De Capua, S
Delalee, F
Duchesneau, D
Egorov, VG
Eurin, G
Evans, JJ
Fajt, L
Filosofov, D
Flack, R
Garrido, X
Gomez, H
Guillon, B
Guzowski, P
Hodak, R
Holy, K
Huber, A
Hugon, C
Jeremie, A
Jullian, S
Karaivanov, D
Kauer, M
Klimenko, AA
Kochetov, O
Konovalov, S
Kovalenko, V
Lang, K
Lemiere, Y
Le Noblet, T
Liptak, Z
Liu, XR
Loaiza, P
Lutter, G
Maalmi, J
Macko, M
Mamedov, F
Marquet, C
Mauger, F
Minotti, A
Mirsagatova, AA
Mirzayev, NA
Moreau, I
Morgan, B
Mott, J
Nemchenok, IB
Nomachi, M
Nova, F
Ohsumi, H
Oliviero, G
Pahlka, RB
Pater, JR
Palusova, V
Perrot, F
Piquemal, F
Povinec, P
Pridal, P
Ramachers, YA
Rebii, A
Remoto, A
Richards, B
Ricol, JS
Rukhadze, E
Rukhadze, N
Saakyan, R
Sadikov, II
Salazar, R
Sarazin, X
Sedgbeer, J
Shitov, YA
Simkovic, F
Simard, L
Smetana, A
Smolek, K
Smolnikov, AA
Snow, S
Soldner-Rembold, S
Soule, B
Spavorova, M
Stekl, I
Tashimova, FA
Thomas, J
Timkin, V
Torre, S
Tretyak, V
Tretyak, V
Umatov, V
Vilela, C
Vorobel, V
Warot, G
Waters, D
Zampaolo, M
Zukauskas, A
Item Type: Journal Article
Abstract: A radiochemical method for producing 82Se sources with an ultra-low level of contamination of natural radionuclides (40K, decay products of 232Th and 238U) has been developed based on cation-exchange chromatographic purification with reverse removal of impurities. It includes chromatographic separation (purification), reduction, conditioning (which includes decantation, centrifugation, washing, grinding, and drying), and 82Se foil production. The conditioning stage, during which highly dispersed elemental selenium is obtained by the reduction of purified selenious acid (H2SeO3) with sulfur dioxide (SO2) represents the crucial step in the preparation of radiopure 82Se samples. The natural selenium (600 g) was first produced in this procedure in order to refine the method. The technique developed was then used to produce 2.5 kg of radiopure enriched selenium (82Se). The produced 82Se samples were wrapped in polyethylene (12 μm thick) and radionuclides present in the sample were analyzed with the BiPo-3 detector. The radiopurity of the plastic materials (chromatographic column material and polypropylene chemical vessels), which were used at all stages, was determined by instrumental neutron activation analysis. The radiopurity of the 82Se foils was checked by measurements with the BiPo-3 spectrometer, which confirmed the high purity of the final product. The measured contamination level for 208Tl was 8–54 μBq/kg, and for 214Bi the detection limit of 600 μBq/kg has been reached.
Issue Date: 1-Feb-2020
Date of Acceptance: 16-May-2019
URI: http://hdl.handle.net/10044/1/76700
DOI: 10.1515/ract-2019-3129
ISSN: 0033-8230
Publisher: Oldenbourg Verlag
Journal / Book Title: Radiochimica Acta
Volume: 108
Issue: 2
Copyright Statement: © 2020 Walter de Gruyter GmbH, Berlin/Boston.
Keywords: Science & Technology
Physical Sciences
Technology
Chemistry, Inorganic & Nuclear
Nuclear Science & Technology
Chemistry
Selenium-82
ion exchange chromatography
purification
mass spectrometry
neutron activation analysis
SuperNEMO
LSM Modane
SPECTROMETRY
IMPURITIES
0302 Inorganic Chemistry
Inorganic & Nuclear Chemistry
Publication Status: Published
Online Publication Date: 2019-06-15
Appears in Collections:Physics
High Energy Physics
Faculty of Natural Sciences