Study fricke gel dosimeter response for different gel quality
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2008
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INTERNATIONAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS, 16th
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Resumo
The Fricke xylenol gel (FXG) dosimeter has been studied for application in
radiotherapy because it is capable of to measure the spatial distribution of radiation doses. The
dosimetry is based on the oxidation of ferrous (Fe2+) to ferric (Fe3+) ions radiation induced,
related to the radiation dose. The gel material usually employed is the 300 Bloom gelatin,
which is imported and very expensive in Brazil. Aiming to analyze the viability of to use a
locally produced and low cost gel material, in this work the spectrophotometric responses of
FXG solutions prepared using 270 Bloom gelatin commercially available and 300 Bloom
gelatin imported were compared. The absorption spectra of solutions prepared with 5% by
weight 270 and 300 Bloom gelatins non-irradiated and irradiated with 60Co gamma radiation in
the dose range between 0.5 and 100 Gy were analysed, the dose-response curves were
evaluated and the useful dose range was established. The obtained results indicate that the
FXG solution prepared with 270 Bloom gelatin presents good performance, similar to that
presented by the FXG solution prepared with 300 Bloom gelatin and its use can be
recommended owing to the low cost and the availability in local market.
Como referenciar
CAVINATO, CHRISTIANNE C.; CAMPOS, LETICIA L. Study fricke gel dosimeter response for different gel quality. In: INTERNATIONAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS, 16th, August 24-29, 2008, Aracaju, SE. Proceedings... DOI: 10.1088/1742-6596/249/1/012064. Disponível em: http://repositorio.ipen.br/handle/123456789/19226. 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.