The influence of unstable signals for electron spin resonance dosimetry with synthetic A-type carbonated apatite
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RICARDO T. LOPES
LAURA NATAL RODRIGUES
LIANA MACEDO DE OLIVEIRA
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Radiation Protection Dosimetry
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Resumo
Synthetic A-type carbonated apatite prepared in controlled conditions was irradiated at room temperature with 60Co
gamma rays. The ESR spectrum was associated to axial CO2- and orthorhombic CO3- species. Radicals used as dose markers
in biological apatites are long-lived paramagnetic species. The stability of the post-irradiation signal of A-type apatite was
investigated for almost 2 years. Measurements showed variations in the spectra attributed to unstable CO3- species, which can
be eliminated by thermal treatments at 100ºC for 24 h. Results indicated the potential use of an A-type carbonated apatite as
a dosemeter.
Como referenciar
OLIVEIRA, L.M.; ROSSI, A.M.; LOPES, R.T.; RODRIGUES, L.N. The influence of unstable signals for electron spin resonance dosimetry with synthetic A-type carbonated apatite. Radiation Protection Dosimetry, v. 101, n. 1/4, p. 539-544, 2002. DOI: 10.1093/oxfordjournals.rpd.a006044. Disponível em: http://repositorio.ipen.br/handle/123456789/7402. 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.