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Development of highly radiopure NaI(T1) scintillator for PICOLON dark matter search project

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dc.contributor.authorFushimi, K.
dc.contributor.authorKanemitsu, Y.
dc.contributor.authorHirata, S.
dc.contributor.authorChernyak, D.
dc.contributor.authorKozlov, A.
dc.contributor.authorКозлов, Александр Анатольевич
dc.date.accessioned2024-11-29T19:22:47Z
dc.date.available2024-11-29T19:22:47Z
dc.date.issued2021
dc.description.abstractHighly radiopure NaI(T1) was developed to search for particle candidates of dark matter. Optimized methods were combined to reduce various radioactive impurities. K-40 was effectively reduced by the recrystallization method. The progenies of the decay chains of uranium and thorium were reduced by appropriate resins. The concentration of natural potassium in NaI(T1) crystal was reduced to 20 ppb. Concentrations of alpha-ray emitters were successfully reduced by appropriate resin selection. The present concentrations of the thorium series and Ra-226 were 1.2 +/- 1.4 mu Bq/kg and 13 +/- 4 mu Bq/kg, respectively. No significant excess in the concentration of Pb-210 was obtained, and the upper limit was 5.7 mu Bq/kg at 90% CL. The achieved level of radiopurity of NaI(T1) crystals makes the construction of a dark matter detector possible.
dc.identifier.citationDevelopment of highly radiopure NaI(T1) scintillator for PICOLON dark matter search project / Fushimi, K [et al.] // Progress of Theoretical and Experimental Physics. - 2021. - 2021. - № 4. - 10.1093/ptep/ptab020
dc.identifier.doi10.1093/ptep/ptab020
dc.identifier.urihttps://www.doi.org/10.1093/ptep/ptab020
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85115852827&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000679390000003
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/24580
dc.relation.ispartofProgress of Theoretical and Experimental Physics
dc.titleDevelopment of highly radiopure NaI(T1) scintillator for PICOLON dark matter search project
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue4
oaire.citation.volume2021
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