Comparison of GEANT4 Simulations with Experimental Data for Thick Al Absorbers

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Autor(es): dc.contributorUniversidade do Estado do Rio de Janeiro (UERJ)-
Autor(es): dc.contributorUniv Tecnol Fed Parana-
Autor(es): dc.contributorCEADEN-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal do Rio de Janeiro (UFRJ)-
Autor(es): dc.creatorYevseyeva, Olga-
Autor(es): dc.creatorAssis, Joaquim de-
Autor(es): dc.creatorEvseev, Ivan-
Autor(es): dc.creatorSchelin, Hugo-
Autor(es): dc.creatorPaschuk, Sergei-
Autor(es): dc.creatorMilhoretto, Edney-
Autor(es): dc.creatorSetti, Joao-
Autor(es): dc.creatorDiaz, Katherin-
Autor(es): dc.creatorHormaza, Joel [UNESP]-
Autor(es): dc.creatorLopes, Ricardo-
Autor(es): dc.creatorGuimaraes, V-
Autor(es): dc.creatorBrandaoDeOliveira, JR-
Autor(es): dc.creatorMacario, KCD-
Autor(es): dc.creatorGenezini, F. A.-
Data de aceite: dc.date.accessioned2022-02-22T00:03:38Z-
Data de disponibilização: dc.date.available2022-02-22T00:03:38Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2009-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/194704-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/194704-
Descrição: dc.descriptionProton beams in medical applications deal with relatively thick targets like the human head or trunk. Therefore, relatively small differences in the total proton stopping power given, for example, by the different models provided by GEANT4 can lead to significant disagreements in the final proton energy spectra when integrated along lengthy proton trajectories. This work presents proton energy spectra obtained by GEANT4.8.2 simulations using ICRU49, Ziegler1985 and Ziegler2000 models for 19.68MeV protons passing through a number of Al absorbers with various thicknesses. The spectra were compared with the experimental data, with TRIM/SRIM2008 and MCNPX2.4.0 simulations, and with the Payne analytical solution for the transport equation in the Fokker-Plank approximation. It is shown that the MCNPX simulations reasonably reproduce well all experimental spectra. For the relatively thin targets all the methods give practically identical results but this is not the same for the thick absorbers. It should be noted that all the spectra were measured at the proton energies significantly above 2MeV, i.e., in the so-called Bethe-Bloch region. Therefore the observed disagreements in GEANT4 results, simulated with different models, are somewhat unexpected. Further studies are necessary for better understanding and definitive conclusions.-
Descrição: dc.descriptionFundacao Araucaria (Parana State, Brazil),-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionUERJ, Inst Politecn, Rua Alberto Rangel S-N, BR-28630050 Nova Friburgo, RJ, Brazil-
Descrição: dc.descriptionUniv Tecnol Fed Parana, UTFPR, BR-80230901 Curitiba, Parana, Brazil-
Descrição: dc.descriptionCEADEN, Ctr Aplicac Tecnol & Desarrollo, Playa, Ciudad Habana, Cuba-
Descrição: dc.descriptionUNESP, Inst Biociencias, BR-18618000 Botucatu, SP, Brazil-
Descrição: dc.descriptionCOPPE UFRJ, Lab Instrumentacao Nucl, BR-21941914 Rio De Janeiro, Brazil-
Descrição: dc.descriptionUNESP, Inst Biociencias, BR-18618000 Botucatu, SP, Brazil-
Formato: dc.format97-+-
Idioma: dc.languageen-
Publicador: dc.publisherAmer Inst Physics-
Relação: dc.relationNuclear Physics 2008-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectProton beams-
Palavras-chave: dc.subjectEnergy measurement-
Palavras-chave: dc.subjectMonte Carlo methods-
Título: dc.titleComparison of GEANT4 Simulations with Experimental Data for Thick Al Absorbers-
Aparece nas coleções:Repositório Institucional - Unesp

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