Optical stimulated luminescence from citrine for high-doses dosimetry
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2016
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INTERNATIONAL CONGRESS OF THE INTERNATIONAL RADIATION PROTECTION ASSOCIATION, 14th
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Resumo
In the sterilization of medical and pharmaceutical products, food and flower preservation, and
treatment of electrical cables and al-treatments of different materials is used the irradiation process by highdoses
because it presents advantages varies.Several Brazilian stone samples were already studied at
IPEN for use in radiation dosimetry, using the techniques of thermoluminescence (TL), optical absorption
(AO) and optically stimulated luminescence (OSL). Different kinds of glasses and sand from Brazilian
beaches were studied at IPEN and showed favorable characteristics for their use for high-dose dosimetry.
The possibility of using semi-precious stones from Brazilian as topaz, amethyst and jasper, and jade samples
from different parts of the world, have been studied and tested at IPEN, using the technique of
thermoluminescence. The objective of this work was to study citrine samples for application in high-dose
dosimetry, using the OSL technique. The thermal treatment for reutilization of the materials was 300oC
during 1h in an unsealed oven. The samples were irradiated using a Gamma Cell-220 system of 60Co
(dose rate of 1.47 kGy/h), with doses from 50 Gy up to 300 kGy. The reproducibility of the OSL response
presented a maximum variation coefficient of 5.7%. The lower detection limit was obtained as 350 mGy
for the citrine pellets. The results show that the OSL detectors based on citrine may be useful for
high-dose dosimetry in industrial processes and in the sterilization process of materials in hospitals.
Como referenciar
TEIXEIRA, MARIA I.; CALDAS, LINDA V.E. Optical stimulated luminescence from citrine for high-doses dosimetry. In: CLEMENT, CHRISTOPHER (ed.); VALENTIN, JACK (ed.); OGINO, HARUYUKI (ed.); FOOTE, DEVON (ed.); REYJAL, JULIE (ed.); OMAR-NAZIR, LAILA (ed.). In: INTERNATIONAL CONGRESS OF THE INTERNATIONAL RADIATION PROTECTION ASSOCIATION, 14th, May 9-13, 2016, Cape Town, South Africa. Abstract... p. 1343-1343. Disponível em: http://repositorio.ipen.br/handle/123456789/31271. 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.