Characterization of neutron spectrum at the short irradiation facility of the IEA-R1 reactor using the bare triple monitor method
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2017
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60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS
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The neutron spectrum parameters were determined in the short irradiation facility
of the IEA-R1 reactor of IPEN. The neutron spectrum parameters are: the epithermal
neutron flux shape factor ( ) approximated by a 1=E1+ distribution and the
thermal to epithermal neutron flux ratio (f ). According to the HOGDAHL formalism,
the k0-NAA method uses the following input parameters: the full energy peak
detection efficiency ("p), and nuclear data on Q0 (ratio of resonance integral I0 to
thermal neutron cross-section 0) and k0 factors. The and f parameters depend on
each irradiation facility and "p depends on each counting facility. In the HOGDAHL
formalism the reactor neutron spectrum parameters ( and f ) can be obtained using
three methods: Cd-ratio, Cd-covered and bare triple monitors. In this work and f
were determined by the bare triple monitor method. In this method, a set of three
neutron flux monitors are irradiated without Cd-cover. The efficiency curves of the
gamma-ray spectrometer used were determined by measuring calibrated radioactive
sources at the usually utilized counting geometries.
Como referenciar
FLORES, J.P.O.; SEMMLER, R. Characterization of neutron spectrum at the short irradiation facility of the IEA-R1 reactor using the bare triple monitor method. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. Abstract... São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 30-30. Disponível em: http://repositorio.ipen.br/handle/123456789/28725. Acesso em: 02 Mar 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.