Contribution of the scattered radiation on the neutron beam fluence at the calibration laboratory of IPEN
Carregando...
Data
Data de publicação
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Radiation Physics and Chemistry
Exportar
Resumo
In recent years, an upsurge in demand for neutron calibrations has been experienced in Brazil and several other
countries in Latin America, mainly due to the increase in oil prospection and extraction procedures. The only
laboratory for calibration of neutron detectors in Brazil is located at the Institute for Radioprotection and
Dosimetry (IRD/CNEN), Rio de Janeiro. This laboratory is the national standard dosimetry laboratory in Brazil.
With the increase in the demand for the calibration of neutron detectors, the need for more calibration services
became evident. In this context, the Calibration Laboratory of IPEN/CNEN, São Paulo, which already offers
calibration services of radiation detectors with standard X, gamma, beta and alpha beams, recently projected a
new calibration laboratory for neutron detectors. One of the main problems in this kind of calibration laboratory
is related to the knowledge of scattered radiation. In order to evaluate it, simulations were performed without
the presence of the structural elements and with the complete room. Thirteen measurement points were evaluated
at various distances. As part of the characterization process of the radiation fields of the new Neutron
Calibration Laboratory, this work presents results on the influence of the radiation scattered by the structural
components of the room: walls, doors, ceiling and floor, in different calibration positions, on the detector response.
Therefore, the neutron radiation attenuation and the scattering parameters were determined at different
source-detector distances, through computational simulation, using the MCNP5 Monte Carlo code.
Como referenciar
ALVARENGA, TALLYSON S.; POLO, IVON O.; PEREIRA, WALSAN W.; SILVA, FELIPE S.; FONSECA, EVALDO S.; CALDAS, LINDA V.E. Contribution of the scattered radiation on the neutron beam fluence at the calibration laboratory of IPEN. Radiation Physics and Chemistry, v. 167, p. 1-5, 2020. DOI: 10.1016/j.radphyschem.2019.03.023. Disponível em: http://repositorio.ipen.br/handle/123456789/31429. Acesso em: 20 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.