Comparison of two methodologies for spectra analysis in coincidence neutron activation analysis
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo de conferência |
Título da fonte: | Repositório Institucional do IPEN |
Texto Completo: | http://repositorio.ipen.br/handle/123456789/30389 |
Resumo: | The Research Reactor Center (CERPq) of IPEN-CNEN/SP has been developing a facility for Coincidence Neutron Activation Analysis (CNAA), a variation of the Neutron Activation Analysis technique in which gamma-gamma coincidence is used to reduce spectral interferences and improve detection limits of some elements. As the acquisition results in 2D-coincidence spectra, the spectrum analysis had to be dealt with accordingly. There are two distinct ways to perform these analyses, either directly, by fitting bidimensional peaks in the coincidence matrix, or by gating the spectra in one detector around each peak of interest and fitting the resulting 1D-spectrum in the usual way. In this work the concentrations of As, Co, Cs, Sb and Se were determined in geological and biological reference materials by CNAA using two different methodologies of analysis, using the BIDIM software, which provides 2D-peak-fitting; and a combination of the AnalisaCAEN suite, which gates the 2D-spectra, with Canberra???s Genie2000, which fits the resulting unidimensional spectra. The results allow for a discussion of the advantages and shortcomings of each method, both in terms of usability and of the reliability of the results. |
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2019-11-29T18:33:12Z2019-11-29T18:33:12ZOctober 21-25, 2019http://repositorio.ipen.br/handle/123456789/303890000-0002-6318-6805The Research Reactor Center (CERPq) of IPEN-CNEN/SP has been developing a facility for Coincidence Neutron Activation Analysis (CNAA), a variation of the Neutron Activation Analysis technique in which gamma-gamma coincidence is used to reduce spectral interferences and improve detection limits of some elements. As the acquisition results in 2D-coincidence spectra, the spectrum analysis had to be dealt with accordingly. There are two distinct ways to perform these analyses, either directly, by fitting bidimensional peaks in the coincidence matrix, or by gating the spectra in one detector around each peak of interest and fitting the resulting 1D-spectrum in the usual way. In this work the concentrations of As, Co, Cs, Sb and Se were determined in geological and biological reference materials by CNAA using two different methodologies of analysis, using the BIDIM software, which provides 2D-peak-fitting; and a combination of the AnalisaCAEN suite, which gates the 2D-spectra, with Canberra???s Genie2000, which fits the resulting unidimensional spectra. The results allow for a discussion of the advantages and shortcomings of each method, both in terms of usability and of the reliability of the results.Submitted by Celia Satomi Uehara (celia.u-topservice@ipen.br) on 2019-11-29T18:33:12Z No. of bitstreams: 1 26151.pdf: 772609 bytes, checksum: c2c9b239b3c40cc57d32e9868d41a566 (MD5)Made available in DSpace on 2019-11-29T18:33:12Z (GMT). No. of bitstreams: 1 26151.pdf: 772609 bytes, checksum: c2c9b239b3c40cc57d32e9868d41a566 (MD5)459-468Associa????o Brasileira de Energia Nuclearbiological materialscalibration standardscomparative evaluationsconcentration ratiogeologyneutron activation analysisspectraComparison of two methodologies for spectra analysis in coincidence neutron activation analysisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectINACIRio de JaneiroSantos, SP10739204510050600600600RIBEIRO JR., IBER?? S.GENEZINI, FREDERICO A.ZAHN, GUILHERME S.INTERNATIONAL NUCLEAR ATLANTIC CONFERENCEinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional do IPENinstname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)instacron:IPEN261512019ZAHN, GUILHERME S.GENEZINI, FREDERICO A.RIBEIRO JR., IBER?? S.19-11Proceedings10050204510739ZAHN, GUILHERME S.:10050:-1:NGENEZINI, FREDERICO A.:2045:310:NRIBEIRO JR., IBER?? 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dc.title.pt_BR.fl_str_mv |
Comparison of two methodologies for spectra analysis in coincidence neutron activation analysis |
title |
Comparison of two methodologies for spectra analysis in coincidence neutron activation analysis |
spellingShingle |
Comparison of two methodologies for spectra analysis in coincidence neutron activation analysis RIBEIRO JR., IBER?? S. biological materials calibration standards comparative evaluations concentration ratio geology neutron activation analysis spectra |
title_short |
Comparison of two methodologies for spectra analysis in coincidence neutron activation analysis |
title_full |
Comparison of two methodologies for spectra analysis in coincidence neutron activation analysis |
title_fullStr |
Comparison of two methodologies for spectra analysis in coincidence neutron activation analysis |
title_full_unstemmed |
Comparison of two methodologies for spectra analysis in coincidence neutron activation analysis |
title_sort |
Comparison of two methodologies for spectra analysis in coincidence neutron activation analysis |
author |
RIBEIRO JR., IBER?? S. |
author_facet |
RIBEIRO JR., IBER?? S. GENEZINI, FREDERICO A. ZAHN, GUILHERME S. INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE |
author_role |
author |
author2 |
GENEZINI, FREDERICO A. ZAHN, GUILHERME S. INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
RIBEIRO JR., IBER?? S. GENEZINI, FREDERICO A. ZAHN, GUILHERME S. INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE |
dc.subject.por.fl_str_mv |
biological materials calibration standards comparative evaluations concentration ratio geology neutron activation analysis spectra |
topic |
biological materials calibration standards comparative evaluations concentration ratio geology neutron activation analysis spectra |
description |
The Research Reactor Center (CERPq) of IPEN-CNEN/SP has been developing a facility for Coincidence Neutron Activation Analysis (CNAA), a variation of the Neutron Activation Analysis technique in which gamma-gamma coincidence is used to reduce spectral interferences and improve detection limits of some elements. As the acquisition results in 2D-coincidence spectra, the spectrum analysis had to be dealt with accordingly. There are two distinct ways to perform these analyses, either directly, by fitting bidimensional peaks in the coincidence matrix, or by gating the spectra in one detector around each peak of interest and fitting the resulting 1D-spectrum in the usual way. In this work the concentrations of As, Co, Cs, Sb and Se were determined in geological and biological reference materials by CNAA using two different methodologies of analysis, using the BIDIM software, which provides 2D-peak-fitting; and a combination of the AnalisaCAEN suite, which gates the 2D-spectra, with Canberra???s Genie2000, which fits the resulting unidimensional spectra. The results allow for a discussion of the advantages and shortcomings of each method, both in terms of usability and of the reliability of the results. |
publishDate |
2019 |
dc.date.evento.pt_BR.fl_str_mv |
October 21-25, 2019 |
dc.date.accessioned.fl_str_mv |
2019-11-29T18:33:12Z |
dc.date.available.fl_str_mv |
2019-11-29T18:33:12Z |
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info:eu-repo/semantics/publishedVersion |
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openAccess |
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459-468 |
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Associa????o Brasileira de Energia Nuclear |
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