A self-sufficient and general method for self-absorption correction in gamma-ray spectrometry using GEANT4

This paper presents a self-sufficient and general method for measurement of the activity of low-level gamma-emitters in voluminous samples by gamma-ray spectrometry with a coaxial germanium detector. Due to self-absorption within the sample, the full-energy peak efficiency of low-energy emitters in...

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Autores: Hurtado Bermúdez, Santiago José, Villa Alfageme, María, Manjón Collado, Guillermo, García-Tenorio García-Balmaseda, Rafael
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2007
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/146471
Acceso en línea:https://hdl.handle.net/11441/146471
https://doi.org/10.1016/j.nima.2007.05.090
Access Level:acceso abierto
Palabra clave:Gamma spectrometry
Self-absorption
Efficiency calibration
Monte Carlo
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spelling A self-sufficient and general method for self-absorption correction in gamma-ray spectrometry using GEANT4Hurtado Bermúdez, Santiago JoséVilla Alfageme, MaríaManjón Collado, GuillermoGarcía-Tenorio García-Balmaseda, RafaelGamma spectrometrySelf-absorptionEfficiency calibrationMonte CarloThis paper presents a self-sufficient and general method for measurement of the activity of low-level gamma-emitters in voluminous samples by gamma-ray spectrometry with a coaxial germanium detector. Due to self-absorption within the sample, the full-energy peak efficiency of low-energy emitters in semiconductor gamma-spectrometers depends strongly on a number of factors including sample composition, density, sample size and gamma-ray energy. As long as those commented factors are well characterized, the influence of self-absorption in the full-energy peak efficiency of low-energy emitters can be calculated using Monte Carlo method based on GEANT4 code for each individual sample. However this task is quite tedious and time consuming. In this paper, we propose an alternative method to determine this influence for voluminous samples of unknown composition. Our method combines both transmission measurements and Monte Carlo simulations, avoiding the application of Monte Carlo full-energy peak efficiency determinations for each individual sample. To test the accuracy and precision of the proposed method, we have calculated 210Pb activity in sediments samples from an estuary located in the vicinity of several phosphates factories with the proposed method, comparing the obtained results with the ones determined in the same samples using two alternative radiometric techniques.ElsevierFísica Aplicada II2007info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/146471https://doi.org/10.1016/j.nima.2007.05.090reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésNuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, 580 (1), 234-237.https://doi.org/10.1016/j.nima.2007.05.090info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1464712026-06-17T12:51:07Z
dc.title.none.fl_str_mv A self-sufficient and general method for self-absorption correction in gamma-ray spectrometry using GEANT4
title A self-sufficient and general method for self-absorption correction in gamma-ray spectrometry using GEANT4
spellingShingle A self-sufficient and general method for self-absorption correction in gamma-ray spectrometry using GEANT4
Hurtado Bermúdez, Santiago José
Gamma spectrometry
Self-absorption
Efficiency calibration
Monte Carlo
title_short A self-sufficient and general method for self-absorption correction in gamma-ray spectrometry using GEANT4
title_full A self-sufficient and general method for self-absorption correction in gamma-ray spectrometry using GEANT4
title_fullStr A self-sufficient and general method for self-absorption correction in gamma-ray spectrometry using GEANT4
title_full_unstemmed A self-sufficient and general method for self-absorption correction in gamma-ray spectrometry using GEANT4
title_sort A self-sufficient and general method for self-absorption correction in gamma-ray spectrometry using GEANT4
dc.creator.none.fl_str_mv Hurtado Bermúdez, Santiago José
Villa Alfageme, María
Manjón Collado, Guillermo
García-Tenorio García-Balmaseda, Rafael
author Hurtado Bermúdez, Santiago José
author_facet Hurtado Bermúdez, Santiago José
Villa Alfageme, María
Manjón Collado, Guillermo
García-Tenorio García-Balmaseda, Rafael
author_role author
author2 Villa Alfageme, María
Manjón Collado, Guillermo
García-Tenorio García-Balmaseda, Rafael
author2_role author
author
author
dc.contributor.none.fl_str_mv Física Aplicada II
dc.subject.none.fl_str_mv Gamma spectrometry
Self-absorption
Efficiency calibration
Monte Carlo
topic Gamma spectrometry
Self-absorption
Efficiency calibration
Monte Carlo
description This paper presents a self-sufficient and general method for measurement of the activity of low-level gamma-emitters in voluminous samples by gamma-ray spectrometry with a coaxial germanium detector. Due to self-absorption within the sample, the full-energy peak efficiency of low-energy emitters in semiconductor gamma-spectrometers depends strongly on a number of factors including sample composition, density, sample size and gamma-ray energy. As long as those commented factors are well characterized, the influence of self-absorption in the full-energy peak efficiency of low-energy emitters can be calculated using Monte Carlo method based on GEANT4 code for each individual sample. However this task is quite tedious and time consuming. In this paper, we propose an alternative method to determine this influence for voluminous samples of unknown composition. Our method combines both transmission measurements and Monte Carlo simulations, avoiding the application of Monte Carlo full-energy peak efficiency determinations for each individual sample. To test the accuracy and precision of the proposed method, we have calculated 210Pb activity in sediments samples from an estuary located in the vicinity of several phosphates factories with the proposed method, comparing the obtained results with the ones determined in the same samples using two alternative radiometric techniques.
publishDate 2007
dc.date.none.fl_str_mv 2007
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/146471
https://doi.org/10.1016/j.nima.2007.05.090
url https://hdl.handle.net/11441/146471
https://doi.org/10.1016/j.nima.2007.05.090
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, 580 (1), 234-237.
https://doi.org/10.1016/j.nima.2007.05.090
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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