A general methodology to determine natural radionuclides by well-type HPGe detectors

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dc.contributor.authorBarba Lobo, Alejandro
dc.contributor.authorGutiérrez de San Miguel Herrera, Enrique
dc.contributor.authorLozano Bermejo, Rafael Luis
dc.contributor.authorBolívar Raya, Juan Pedro
dc.date.accessioned2021-10-07T10:31:24Z
dc.date.available2021-10-07T10:31:24Z
dc.date.issued2021
dc.description.abstractThis work aims to determine natural radionuclides (210Pb, 228,226Ra, 234,228Th and 40K) in NORM samples by well-type HPGe detectors because they are of vital importance in studies on environmental samples. For this, a novel methodology has been developed, based on obtaining a general function for the full-energy peak efficiency (FEPE) versus the sample apparent density and composition, keeping the sample height constant. To obtain the general FEPE function, a calibration in efficiency has been accomplished using certified standards provided by IAEA (RGU-1 and RGTh-1), and KCl. Besides, different self-absorption correction functions were compared for cylindrical geometry, where chemical compositions need to be known. Then, a study on using an anti-Compton system was done, getting a lower detection limit and allowing to propose gamma spectrometry as an alternative technique to alpha-particle spectrometry. Finally, the followed methodology to calculate the FEPE was subjected to internal and external validations, checking its validity range.es_ES
dc.description.departmentCiencias Integradas
dc.description.sponsorshipFunding for open access charge: Universidad de Huelva / CBUAThis research was partially funded by a project of the Regional Government of Andalusia “Basic processes regulating the fractionations and enrichments of natural radionuclides under acid mine drainage conditions” (Ref.: UHU-1255876), and a project of the Projects for Novel Principal Investigators “Quantitative study of the variables involved in the radon exhalation rate for granular solids; application to rafts of granular solid phosphogypsum” (Ref.: UHUPJ-00005-632). A.B.L. acknowledges support from funds provided by the Spanish Ministry of Science, Innovation and Universities’ Research Agency and co-financing provided by the European Social Fund (ESF) and the Spanish National Youth Guarantee Implementation Plan under Contract No. PEJ2018-002676-A.
dc.identifier.citationBarba-Lobo, A., San Miguel, E. G., Lozano, R. L., & Bolívar, J. P. (2021). A general methodology to determine natural radionuclides by well-type HPGe detectors. Measurement, 181, 109561. https://doi.org/10.1016/j.measurement.2021.109561es_ES
dc.identifier.doi10.1016/j.measurement.2021.109561
dc.identifier.issn0263-2241
dc.identifier.urihttp://hdl.handle.net/10272/20147
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.otherGamma–Alpha-particle spectrometryes_ES
dc.subject.otherWell-type Ge detectorses_ES
dc.subject.otherEfficiency calibrationes_ES
dc.subject.otherSelf-absorption correctiones_ES
dc.subject.otherAnti-Compton systemes_ES
dc.subject.otherNORMes_ES
dc.subject.unesco22 Físicaes_ES
dc.titleA general methodology to determine natural radionuclides by well-type HPGe detectorses_ES
dc.typejournal articlees_ES
dc.type.hasVersionVoR
dspace.entity.typePublication
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relation.isAuthorOfPublication286da867-ae83-4e8d-8f11-6a422237305a
relation.isAuthorOfPublicationd4bcd1fb-24c3-4497-bac0-e1d5c86904f0
relation.isAuthorOfPublication.latestForDiscovery95264d3c-e5cb-429b-8bee-684c6f9239b0

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