Thermoluminescence studies of polycrystalline CaSiO3 pellets for photons and particle therapy beams
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2020
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Radiation Physics and Chemistry
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In this work, pellets of CaSiO3 have been produced for investigation as gamma radiation, proton, and carbon ions
detector. They were then irradiated to gamma radiation using 137Cs and 60Co sources. Furthermore, pellets of
CaSiO3 were exposed to 160 MeV proton and 290 MeV/n carbon ion beam from an upper synchrotron.
Thermoluminescence (TL) responses of these pellets presented the same prominent peak at about 170 °C, and
two possible high-temperature peaks at 270 and 320 °C when irradiated to gamma, proton, and carbon ion beam.
Dose-response curve, minimum detectable dose (MDD), energy dependence, and dependence on the dose rate
when irradiated with gamma radiation were evaluated in this material. Linear dose-response curves for proton
and carbon ion irradiation have been compared to that of the gamma dose-response. In this way, the dose read
out in Harshaw TL reader presented a good agreement with doses found using ion chamber in the case of proton
beams and slightly less in the case of carbon beam due to the LET dependency. Furthermore, relative efficiencies
of CaSiO3 for beam irradiation of proton and carbon ion display no dependence in the analyzed particle doses
range.
Como referenciar
GONZALES-LORENZO, CARLOS D.; NASCIMENTO, LUANA F.; KODAIRA, SATOSHI; GOMES, MONISE B.; WATANABE, SHIGUEO. Thermoluminescence studies of polycrystalline CaSiO3 pellets for photons and particle therapy beams. Radiation Physics and Chemistry, v. 177, p. 1-8, 2020. DOI: 10.1016/j.radphyschem.2020.109132. Disponível em: http://repositorio.ipen.br/handle/123456789/31459. Acesso em: 10 May 2024.
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.