Comparative study of the dose rate influence in the radiochromic polymeric film dosimeter response
Carregando...
Data
Data de publicação
2008
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
INTERNATIONAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS, 16th
Exportar
Resumo
Most of film dosimetry is based on optical signal measurements since the
spectrophotometric technique is cheap and widespread. Radiation induced chemical reactions
take place in the material creating and/or enhancing absorption bands in the visible and/or
ultraviolet regions of the spectrum. The response of most films used in routine dosimetry is
usually influenced by the environmental conditions (temperature, humidity, ligth), dose rate
and post irradiation storage. Several film dosimeters are commercially available for the
absorbed dose measurements, in this work the effects of dose rate changes in optical density
(OD) of film dosimeters (polymethylmetacrylate – PMMA) and polycarbonate – PC) were
investigated and compared. Polycarbonates has been investigated as a new dosimetric
material for industrial radiation processing aiming low cost, easy handle, fast and accurate
response. PMMA dosimeters has been used routinely in dosimetry. The dose rate (kGy h-1)
may influence the dosimeter response and appropriate corrections are necessary. The
dosimeters were irradiated with 60Co gamma-radiation at dose rate in the range 0.26 –
2.6 kGy h-1 and with electrons from accelerator with maximum energy of 1.5 MeV and dose
rate between 4.19 and 33.59 kGy s-1 to absorbed doses of 5 and 15 kGy, respectively. The
irradiated dosimeters were measured using Shimadzu UV-2101PC spectrophotometer. It can
observed that the films shows moderate dose-rate dependence (about 10%) in the analised
range.
Como referenciar
GALANTE, A.M.S.; CAMPOS, L.L. Comparative study of the dose rate influence in the radiochromic polymeric film dosimeter response. In: INTERNATIONAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS, 16th, August 24-29, 2008, Aracaju, SE. Proceedings... DOI: 10.1088/1742-6596/249/1/012061. Disponível em: http://repositorio.ipen.br/handle/123456789/15970. 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.