An upgraded lab-based method to determine natural γ-ray emitters in NORM samples by using Ge detectors

The regulation existing on NORM activities requires the accurate and quick measurement of natural radionuclides in a wide range of matrices by gamma spectrometry. The aim of this work has been to develop a comprehensive and accurate methodology to determine natural long-lived radionuclides (210Pb, 2...

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Authors: Barba Lobo, Alejandro, Mosqueda Peña, Fernando, Bolívar Raya, Juan Pedro
Format: article
Publication Date:2021
Country:España
Institution:Universidad de Huelva (UHU)
Repository:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Language:English
OAI Identifier:oai:ariasmontano.uhu.es:10272/20392
Online Access:http://hdl.handle.net/10272/20392
Access Level:Open access
Keyword:Gamma spectrometry
Ge detectors
Efficiency calibration
NORM
Self-attenuation
222Rn losses
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spelling An upgraded lab-based method to determine natural γ-ray emitters in NORM samples by using Ge detectorsBarba Lobo, AlejandroMosqueda Peña, FernandoBolívar Raya, Juan PedroGamma spectrometryGe detectorsEfficiency calibrationNORMSelf-attenuation222Rn lossesThe regulation existing on NORM activities requires the accurate and quick measurement of natural radionuclides in a wide range of matrices by gamma spectrometry. The aim of this work has been to develop a comprehensive and accurate methodology to determine natural long-lived radionuclides (210Pb, 228,226Ra, 234,228Th and 40K) by gamma spectrometry with Ge detectors in NORM samples. An exhaustive calibration method to obtain the full-energy peak efficiency (FEPE), for each gamma emission energy, as a function of the thickness, apparent density and matrix composition of the cylindrical sample, has been developed. The selected certified calibration standards contain only natural radionuclides belonging to the 238U- and 232Th-series as well as 40K (codes RGU-1, RGTh-1 and RGK-1 from IAEA). Then, the obtained FEPE curves were validated using Genie 2000 simulations and Certified Reference Materials, for which the self-attenuation corrections were considered. Finally, a study on 222Rn losses was done for several samples.Elsevier20212021-09-1120212021-09-11journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10272/20392reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/203922026-06-02T14:58:11Z
dc.title.none.fl_str_mv An upgraded lab-based method to determine natural γ-ray emitters in NORM samples by using Ge detectors
title An upgraded lab-based method to determine natural γ-ray emitters in NORM samples by using Ge detectors
spellingShingle An upgraded lab-based method to determine natural γ-ray emitters in NORM samples by using Ge detectors
Barba Lobo, Alejandro
Gamma spectrometry
Ge detectors
Efficiency calibration
NORM
Self-attenuation
222Rn losses
title_short An upgraded lab-based method to determine natural γ-ray emitters in NORM samples by using Ge detectors
title_full An upgraded lab-based method to determine natural γ-ray emitters in NORM samples by using Ge detectors
title_fullStr An upgraded lab-based method to determine natural γ-ray emitters in NORM samples by using Ge detectors
title_full_unstemmed An upgraded lab-based method to determine natural γ-ray emitters in NORM samples by using Ge detectors
title_sort An upgraded lab-based method to determine natural γ-ray emitters in NORM samples by using Ge detectors
dc.creator.none.fl_str_mv Barba Lobo, Alejandro
Mosqueda Peña, Fernando
Bolívar Raya, Juan Pedro
author Barba Lobo, Alejandro
author_facet Barba Lobo, Alejandro
Mosqueda Peña, Fernando
Bolívar Raya, Juan Pedro
author_role author
author2 Mosqueda Peña, Fernando
Bolívar Raya, Juan Pedro
author2_role author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Gamma spectrometry
Ge detectors
Efficiency calibration
NORM
Self-attenuation
222Rn losses
topic Gamma spectrometry
Ge detectors
Efficiency calibration
NORM
Self-attenuation
222Rn losses
description The regulation existing on NORM activities requires the accurate and quick measurement of natural radionuclides in a wide range of matrices by gamma spectrometry. The aim of this work has been to develop a comprehensive and accurate methodology to determine natural long-lived radionuclides (210Pb, 228,226Ra, 234,228Th and 40K) by gamma spectrometry with Ge detectors in NORM samples. An exhaustive calibration method to obtain the full-energy peak efficiency (FEPE), for each gamma emission energy, as a function of the thickness, apparent density and matrix composition of the cylindrical sample, has been developed. The selected certified calibration standards contain only natural radionuclides belonging to the 238U- and 232Th-series as well as 40K (codes RGU-1, RGTh-1 and RGK-1 from IAEA). Then, the obtained FEPE curves were validated using Genie 2000 simulations and Certified Reference Materials, for which the self-attenuation corrections were considered. Finally, a study on 222Rn losses was done for several samples.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-09-11
2021
2021-09-11
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10272/20392
url http://hdl.handle.net/10272/20392
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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