Primary standardization of sup(242)Am radioactive sources
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2001
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REGIONAL CONGRESS ON RADIATION PROTECTION AND SAFETY, 5th, REGIONAL IRPA CONGRESS
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Resumo
The procedure followed by the Laboratório de Metrologia Nuclear in São Paulo, Brazil, for the
standardization of 242gAm is described. The calibration system was composed of a 4π gas-flow
proportional counter coupled to a pair of NaI(Tl) crystals operating in coincidence. The
samples were produced by irradiating dried aliquots of 241Am with thermal and epithermal
neutrons at the IEA-R1 research reactor. The efficiency tracer technique has been applied using
60Co as tracer. The beta detection efficiency was changed by external absorbers and
extrapolated to unity by linear least square fitting applying covariance methodology.
Como referenciar
MAIDANA, N.L.; DIAS, M.S.; KOSKINAS, M.F. Primary standardization of sup(242)Am radioactive sources. In: REGIONAL CONGRESS ON RADIATION PROTECTION AND SAFETY, 5th, REGIONAL IRPA CONGRESS, Apr. 29 - May 4, 2001, Recife, PE. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/15242. Acesso em: 14 Mar 2025.
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