Study of the influence of scattered radiation at a gamma irradiator
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2008
Autores IPEN
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INTERNATIONAL YOUT NUCLEAR CONGRESS
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Resumo
The Calibration Laboratory of IPEN offers calibration services for portable radiation monitors
using a Buchler gamma irradiator with 137Cs and 60Co radioactive sources. The beam dosimetry
measurements are taken periodically between the source-instrument distances of 1m and 4m. The
ISO 4037 standard (International Organization for Standardization) states that the air kerma rate due
to scattered radiation shall not exceed 5% of that due to direct radiation. To verify if the facility was in
accordance to the requirements, the evaluation of the scattered radiation was performed in this work.
The air kerma rates were measured on the beam axis at various distances from the source up to
5.5m, and the radiation attenuation curve was obtained. The air kerma rates were proportional within
5% of deviation to the inverse square law from the source centre to the detector centre, as required by
the ISO 4037 standard.
Como referenciar
AFONSO, LUCIANA C.; CALDAS, LINDA V.E. Study of the influence of scattered radiation at a gamma irradiator. In: INTERNATIONAL YOUT NUCLEAR CONGRESS, September 20-26, 2008, Interlaken, Switzerland. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/16004. 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.