Design, fabrication and modeling of an AmBe neutron irradiator for TLD screening for neutron dose measurement in mixed radiation fields
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2019
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Applied Radiation and Isotopes
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TLDs dosimeters are frequently presented as a viable choice for dosimetric studies when dealing with mixed
neutron-gamma radiation fields. However, this choice is not without some drawbacks, because not only TLD
response is highly dependent on particle type but also on neutron energy spectrum. Therefore, a correct
screening and calibration of the dosimeter are required, and a simple shift from gamma screening methodology
for mixed field is not suitable. This paper presents the design, fabrication and tests of an irradiator for TLD
screening for neutron dose measurement using an AmBe source and polyethylene as moderator material. The
design of the irradiator was conducted through Monte Carlo simulations using the MCNP5 code. The experimental
validation and tests were performed using Indium activation foils and TLD 600 dosimeters. The manufactured
irradiator demonstrated to be suitable for TLD screening under neutron source radiation field, offering
very good homogeneity conditions in the radiation field so to guarantee same radiation dose delivered to the
TLDs.
Como referenciar
CAVALIERI, TASSIO A.; SIQUEIRA, PAULO T.D.; SHORTO, JULIAN M.B.; GENEZINI, FREDERICO A.; YORIYAZ, HELIO. Design, fabrication and modeling of an AmBe neutron irradiator for TLD screening for neutron dose measurement in mixed radiation fields. Applied Radiation and Isotopes, v. 150, p. 31-38, 2019. DOI: 10.1016/j.apradiso.2019.05.009. Disponível em: http://repositorio.ipen.br/handle/123456789/29969. Acesso em: 19 Apr 2024.
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.