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Advances in electron spin resonance dosimetry, archeological dating and biomaterials characterization


Electron spin resonance (ESR) is a versatile spectroscopic technique for the study of different materials. This project is focused, but not limited to, on the ESR applications for ionizing radiation dosimetry, dating and biomaterials characterization. ESR dosimetry and dating are relatively new areas of application with many open questions that will be addressed by the present research. New methods and approaches will be studied to broaden the applications and to characterize biomaterials. The ESR dosimetry and dating experiments are based in the detection of a signal, stable or with low fading, sensitive to the ionizing radiation. Hard tissues such as bone and tooth enamel as well as minerals had been used for this purpose. However in case of radiological accidents it would be desirable to study alternative materials such as nail and hair. In this case the radicals created by ionizing radiation are not stable and several procedures must be taken to assure the detection of the signal and to infer the actual exposition dose. In another application ST-ESR spectra will be studied to reveal the spectral characteristics associated with the ionizing radiation. (AU)

Articles published in Pesquisa FAPESP Magazine about the research grant:
New pieces of the puzzle 
Las nuevas piezas del rompecabezas 
New pieces of the puzzle 
Las nuevas piezas del rompecabezas 
Articles published in Agência FAPESP Newsletter about the research grant:
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Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CORTES FARIA, FABIO HENRIQUE; KINOSHITA, ANGELA; CARVALHO, ISMAR DE SOUZA; DE ARAUJO-JUNIOR, HERMINIO ISMAEL; PEGORIN, PRISCILA; FIGUEIREDO, ANA MARIA G.; BAFFA, OSWALDO. ESR dating of late Quaternary megafauna fossils from Joao Dourado, Bahia, Brazil. Journal of South American Earth Sciences, v. 101, AUG 2020. Web of Science Citations: 0.
LOPES, RENATO PEREIRA; PEREIRA, JAMIL CORREA; KINOSHITA, ANGELA; MOLLEMBERG, MICHELLE; BARBOSA, JR., FERNANDO; BAFFA, OSWALDO. Geological and taphonomic significance of electron spin resonance (ESR) ages of Middle-Late Pleistocene marine shells from barrier-lagoon systems of Southern Brazil. Journal of South American Earth Sciences, v. 101, AUG 2020. Web of Science Citations: 0.
GUIDELLI, EDER J.; LIMA, IARA S.; BAFFA, OSWALDO. Monosodium glutamate for accidental, retrospective, and medical dosimetry using electron spin resonance. RADIATION AND ENVIRONMENTAL BIOPHYSICS, v. 57, n. 4, p. 349-356, NOV 2018. Web of Science Citations: 1.
LUCAS APARECIDO ROSA LEITE; ANGELA KINOSHITA; OSWALDO BAFFA; RODNEY KOZLOWISKI DE AZEVEDO; VANESSA DORO ABDALLAH. Electron Spin Resonance (ESR) in detection of aquatic pollution through host-parasite relationship. Rev. Ambient. Água, v. 13, n. 6, p. -, 2018.
ALVES, G. G.; KINOSHITA, A.; DE OLIVEIRA, H. F.; GUIMARAES, F. S.; AMARAL, L. L.; BAFFA, O. Accuracy of dose planning for prostate radiotherapy in the presence of metallic implants evaluated by electron spin resonance dosimetry. Brazilian Journal of Medical and Biological Research, v. 48, n. 7, p. 644-649, JUN 2015. Web of Science Citations: 3.
KINOSHITA, ANGELA; SKINNER, ANNE R.; GUIDON, NIEDE; IGNACIO, ELAINE; FELICE, GISELE DALTRINI; BUCO, CRISTIANE DE A.; TATUMI, SONIA; YEE, MARCIO; GRACIANO FIGUEIREDO, ANA MARIA; BAFFA, OSWALDO. Dating human occupation at Toca do Serrote das Moendas, Sao Raimundo Nonato, Piaui-Brasil by electron spin resonance and optically stimulated luminescence. Journal of Human Evolution, v. 77, n. SI, p. 187-195, DEC 2014. Web of Science Citations: 5.

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