Stochastic modeling of a neutron imaging center at the Brazilian Multipurpose Reactor
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Nuclear Engineering and Design
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Neutron imaging is a non-destructive technique for analyzing a wide class of samples, such as archaeological
or industrial material structures. In recent decades, technological advances have had a great impact on the
neutron imaging technique, which has meant an evolution from simple radiographs using films (2D) to modern
tomography systems with digital processing (3D). The 5 MW research nuclear reactor IEA-R1, which is located
at the Instituto de Pesquisas Energéticas e Nucleares (IPEN) in Brazil, possesses a neutron imaging instrument
with 1.0 × 106 𝑛∕𝑐𝑚2
𝑠 in the sample position. IEA-R1 is over 60 years old and the future of neutron science
in Brazil, including imaging, will be expanded to a new facility called the Brazilian Multipurpose Reactor
(RMB, Portuguese acronym), which will be built soon. The new reactor will house a suite of instruments
at the Neutron National Laboratory, including the neutron imaging facility, viz., Neinei. Inspired by recent
author’s works, we model the Neinei instrument through stochastic Monte Carlo simulations. We investigate
the sensitivity of the neutron imaging technique parameter (𝐿∕𝐷 ratio) with the neutron flux, and the results
are compared to data from the Neutra (PSI), Antares (FRM II), BT2 (NIST) and DINGO (OPAL) instruments.
The results are promising and provide avenues for future improvements.
Como referenciar
OLIVEIRA, L.P. de; SOUZA, A.P.S.; GENEZINI, F.A.; SANTOS, A. dos. Stochastic modeling of a neutron imaging center at the Brazilian Multipurpose Reactor. Nuclear Engineering and Design, v. 420, p. 1-10, 2024. DOI: 10.1016/j.nucengdes.2024.113042. Disponível em: https://repositorio.ipen.br/handle/123456789/48104. Acesso em: 30 Dec 2025.
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.