Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFS |
Texto Completo: | http://ri.ufs.br/jspui/handle/riufs/10075 |
Resumo: | In this work, the Monte Carlo Code (MC) Particle and Heavy Ion Transport code System (PHITS) was applied in the geometric optimization of films 6LiF loaded with Al2O3:C, Optically Stimulated Luminescence (OSL) emitting particles, aiming to predict the dose response in two-dimensional dosimeters. The goal was to optimize the design of this new type of dosimetric film using only computational calculations. During the simulations the films were irradiated with a 60Co source, which emits monoenergetic photons with energy of 1.2 MeV under non-equilibrium conditions on the surface of a water phantom. The MC PHITS code was used to model the geometry of particle dispersion and to investigate the structure of tracks and the energy distribution due to the transportation of secondary particles produced by photon interactions through the films. The simulations were performed varying the diameter of the OSL emitters. The energy deposited by fluence of incident particles did not change with the diameter of the spherical grains that were simulated from 20 mm to 100 mm, resulting in Edep,cor,y/?y=7,38.10-4 MeV cm2, with statistical uncertainty better than 7%. Thus, it has been observed that there is no sensitivity dependence of the film with the size of the Al2O3:C grain constructed for dosimetry photons from a 60Co source. The results indicate that we can obtain films with the use of luminescent materials that are tissue-equivalent (TE) in any matrix, because it is possible to use high fill fractions in the voxel with the OSL material without a great change in energy deposition. Better still, the data also demonstrated that there is a good possibility of making a film considered TE, even using a non-TE OSL material embedded in a TE polymer, which would still provide the possibility of the film being extremely flexible. |
id |
UFS-2_04f66369d03961e036c117fdc486a8e7 |
---|---|
oai_identifier_str |
oai:ufs.br:riufs/10075 |
network_acronym_str |
UFS-2 |
network_name_str |
Repositório Institucional da UFS |
repository_id_str |
|
spelling |
Souza, Jonathan SilvaLalic, Susana de Souza2018-12-06T15:07:20Z2018-12-06T15:07:20Z2018-07-23SOUZA, Jonathan Silva. Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C. 2018. 87 f. Dissertação (Mestrado em Física) - Universidade Federal de Sergipe, São Cristóvão, SE, 2018.http://ri.ufs.br/jspui/handle/riufs/10075In this work, the Monte Carlo Code (MC) Particle and Heavy Ion Transport code System (PHITS) was applied in the geometric optimization of films 6LiF loaded with Al2O3:C, Optically Stimulated Luminescence (OSL) emitting particles, aiming to predict the dose response in two-dimensional dosimeters. The goal was to optimize the design of this new type of dosimetric film using only computational calculations. During the simulations the films were irradiated with a 60Co source, which emits monoenergetic photons with energy of 1.2 MeV under non-equilibrium conditions on the surface of a water phantom. The MC PHITS code was used to model the geometry of particle dispersion and to investigate the structure of tracks and the energy distribution due to the transportation of secondary particles produced by photon interactions through the films. The simulations were performed varying the diameter of the OSL emitters. The energy deposited by fluence of incident particles did not change with the diameter of the spherical grains that were simulated from 20 mm to 100 mm, resulting in Edep,cor,y/?y=7,38.10-4 MeV cm2, with statistical uncertainty better than 7%. Thus, it has been observed that there is no sensitivity dependence of the film with the size of the Al2O3:C grain constructed for dosimetry photons from a 60Co source. The results indicate that we can obtain films with the use of luminescent materials that are tissue-equivalent (TE) in any matrix, because it is possible to use high fill fractions in the voxel with the OSL material without a great change in energy deposition. Better still, the data also demonstrated that there is a good possibility of making a film considered TE, even using a non-TE OSL material embedded in a TE polymer, which would still provide the possibility of the film being extremely flexible.Neste trabalho, o código de Monte Carlo (MC) Particle and Heavy Ion Transport code System (PHITS) foi aplicado na otimização geométrica de filmes de 6LiF carregados com Al2O3:C, partículas de emissoras de Luminescência Opticamente Estimulada (OSL), visando prever a dose resposta em dosímetros bidimensionais. O objetivo foi conseguir otimizar a concepção desse novo tipo de filme dosimétrico usando apenas cálculos computacionais. Nessas simulações o filme foi irradiado com uma fonte de fótons de 60Co, que emite fótons monoenergéticos com energia de 1,2 MeV em condições de não equilíbrio, na superfície de um phantom de água. O código MC PHITS foi usado para simular a geometria da dispersão de partículas e investigar a estrutura das trilhas e as distribuições da deposição de energia devido ao transporte de partículas secundárias produzidas por interações de fótons através dos filmes. As simulações foram realizadas variando o diâmetro dos grãos emissores de OSL. A energia depositada por fluência de partículas incidentes não mudou com o diâmetro dos grãos esféricos que foram simulados desde 20 mm até 100 mm, resultando em , Edep,cor,y/?y=7,38.10-4 MeV cm2, com incerteza estatística melhor do que 7%. Assim, observou-se que não há dependência de sensibilidade do filme com o tamanho do grão de Al2O3:C construído para a dosimetria com fótons de fonte de 60Co. Os resultados indicam que poderemos obter filmes com a utilização de materiais luminescentes que sejam tecido-equivalentes (TE) em uma matriz qualquer, pois é possível o uso de frações de preenchimento elevadas no voxel com o material OSL sem grande alteração na deposição de energia. Melhor ainda, é que os dados também demonstraram que há uma boa possibilidade de se fabricar um filme considerado TE, mesmo usando um material OSL que não seja TE embebido num polímero TE, o que ainda proporcionaria a possibilidade do filme ser extremamente flexível.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESSão Cristóvão, SEporFilme dosimétricoFilme OSLPHITSSimulação computacionalComputational simulationDosimetric filmOSL filmCIENCIAS EXATAS E DA TERRA::FISICASimulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:CMonte Carlo simulation : dosimetria OSL in films of Al2O3:Cinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisPós-Graduação em FísicaUniversidade Federal de Sergipereponame:Repositório Institucional da UFSinstname:Universidade Federal de Sergipe (UFS)instacron:UFSinfo:eu-repo/semantics/openAccessTEXTJONATHAN_SILVA_SOUZA.pdf.txtJONATHAN_SILVA_SOUZA.pdf.txtExtracted texttext/plain156694https://ri.ufs.br/jspui/bitstream/riufs/10075/3/JONATHAN_SILVA_SOUZA.pdf.txt07b00bd594781b77b9bae10fa0f50a27MD53THUMBNAILJONATHAN_SILVA_SOUZA.pdf.jpgJONATHAN_SILVA_SOUZA.pdf.jpgGenerated Thumbnailimage/jpeg1255https://ri.ufs.br/jspui/bitstream/riufs/10075/4/JONATHAN_SILVA_SOUZA.pdf.jpg1fce6592f2832eb8f7365528106cbf22MD54LICENSElicense.txtlicense.txttext/plain; charset=utf-81475https://ri.ufs.br/jspui/bitstream/riufs/10075/1/license.txt098cbbf65c2c15e1fb2e49c5d306a44cMD51ORIGINALJONATHAN_SILVA_SOUZA.pdfJONATHAN_SILVA_SOUZA.pdfapplication/pdf2290551https://ri.ufs.br/jspui/bitstream/riufs/10075/2/JONATHAN_SILVA_SOUZA.pdf73e063ed92f9bcb9318085d9c9f40fafMD52riufs/100752018-12-06 12:07:20.934oai:ufs.br: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Repositório InstitucionalPUBhttps://ri.ufs.br/oai/requestrepositorio@academico.ufs.bropendoar:2018-12-06T15:07:20Repositório Institucional da UFS - Universidade Federal de Sergipe (UFS)false |
dc.title.pt_BR.fl_str_mv |
Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C |
dc.title.alternative.eng.fl_str_mv |
Monte Carlo simulation : dosimetria OSL in films of Al2O3:C |
title |
Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C |
spellingShingle |
Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C Souza, Jonathan Silva Filme dosimétrico Filme OSL PHITS Simulação computacional Computational simulation Dosimetric film OSL film CIENCIAS EXATAS E DA TERRA::FISICA |
title_short |
Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C |
title_full |
Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C |
title_fullStr |
Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C |
title_full_unstemmed |
Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C |
title_sort |
Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C |
author |
Souza, Jonathan Silva |
author_facet |
Souza, Jonathan Silva |
author_role |
author |
dc.contributor.author.fl_str_mv |
Souza, Jonathan Silva |
dc.contributor.advisor1.fl_str_mv |
Lalic, Susana de Souza |
contributor_str_mv |
Lalic, Susana de Souza |
dc.subject.por.fl_str_mv |
Filme dosimétrico Filme OSL PHITS Simulação computacional Computational simulation |
topic |
Filme dosimétrico Filme OSL PHITS Simulação computacional Computational simulation Dosimetric film OSL film CIENCIAS EXATAS E DA TERRA::FISICA |
dc.subject.eng.fl_str_mv |
Dosimetric film OSL film |
dc.subject.cnpq.fl_str_mv |
CIENCIAS EXATAS E DA TERRA::FISICA |
description |
In this work, the Monte Carlo Code (MC) Particle and Heavy Ion Transport code System (PHITS) was applied in the geometric optimization of films 6LiF loaded with Al2O3:C, Optically Stimulated Luminescence (OSL) emitting particles, aiming to predict the dose response in two-dimensional dosimeters. The goal was to optimize the design of this new type of dosimetric film using only computational calculations. During the simulations the films were irradiated with a 60Co source, which emits monoenergetic photons with energy of 1.2 MeV under non-equilibrium conditions on the surface of a water phantom. The MC PHITS code was used to model the geometry of particle dispersion and to investigate the structure of tracks and the energy distribution due to the transportation of secondary particles produced by photon interactions through the films. The simulations were performed varying the diameter of the OSL emitters. The energy deposited by fluence of incident particles did not change with the diameter of the spherical grains that were simulated from 20 mm to 100 mm, resulting in Edep,cor,y/?y=7,38.10-4 MeV cm2, with statistical uncertainty better than 7%. Thus, it has been observed that there is no sensitivity dependence of the film with the size of the Al2O3:C grain constructed for dosimetry photons from a 60Co source. The results indicate that we can obtain films with the use of luminescent materials that are tissue-equivalent (TE) in any matrix, because it is possible to use high fill fractions in the voxel with the OSL material without a great change in energy deposition. Better still, the data also demonstrated that there is a good possibility of making a film considered TE, even using a non-TE OSL material embedded in a TE polymer, which would still provide the possibility of the film being extremely flexible. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-12-06T15:07:20Z |
dc.date.available.fl_str_mv |
2018-12-06T15:07:20Z |
dc.date.issued.fl_str_mv |
2018-07-23 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SOUZA, Jonathan Silva. Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C. 2018. 87 f. Dissertação (Mestrado em Física) - Universidade Federal de Sergipe, São Cristóvão, SE, 2018. |
dc.identifier.uri.fl_str_mv |
http://ri.ufs.br/jspui/handle/riufs/10075 |
identifier_str_mv |
SOUZA, Jonathan Silva. Simulação de Monte Carlo : dosimetria OSL em filmes de Al2O3:C. 2018. 87 f. Dissertação (Mestrado em Física) - Universidade Federal de Sergipe, São Cristóvão, SE, 2018. |
url |
http://ri.ufs.br/jspui/handle/riufs/10075 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.program.fl_str_mv |
Pós-Graduação em Física |
dc.publisher.initials.fl_str_mv |
Universidade Federal de Sergipe |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFS instname:Universidade Federal de Sergipe (UFS) instacron:UFS |
instname_str |
Universidade Federal de Sergipe (UFS) |
instacron_str |
UFS |
institution |
UFS |
reponame_str |
Repositório Institucional da UFS |
collection |
Repositório Institucional da UFS |
bitstream.url.fl_str_mv |
https://ri.ufs.br/jspui/bitstream/riufs/10075/3/JONATHAN_SILVA_SOUZA.pdf.txt https://ri.ufs.br/jspui/bitstream/riufs/10075/4/JONATHAN_SILVA_SOUZA.pdf.jpg https://ri.ufs.br/jspui/bitstream/riufs/10075/1/license.txt https://ri.ufs.br/jspui/bitstream/riufs/10075/2/JONATHAN_SILVA_SOUZA.pdf |
bitstream.checksum.fl_str_mv |
07b00bd594781b77b9bae10fa0f50a27 1fce6592f2832eb8f7365528106cbf22 098cbbf65c2c15e1fb2e49c5d306a44c 73e063ed92f9bcb9318085d9c9f40faf |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFS - Universidade Federal de Sergipe (UFS) |
repository.mail.fl_str_mv |
repositorio@academico.ufs.br |
_version_ |
1802110691691200512 |