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British Journal of Radiology (1989) 62, 148-153
© 1989 British Institute of Radiology
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The British Journal of Radiology, Vol 62, Issue 734 148-153, Copyright © 1989 by British Institute of Radiology

ARTICLES

Possibility of retrospective dosimetry for persons accidentally exposed to ionizing radiation using electron spin resonance of sugar and mother-of-pearl

T Nakajima
Division of Physics, National Institute of Radiological Sciences, Chiba-shi, Japan.

An electron spin resonance (ESR) dosemeter was used to measure ESR absorption spectra of sugar and shell buttons made of mother-of-pearl, for the purpose of evaluating the external dose to exposed inhibitants in the vicinity of a radiation accident. The ESR absorption intensity of sugar was proportional to dose in the range from about 30 mGy to 6 x 10(4) Gy. The lifetime of the free radical created in both sugar and shell buttons by radiation was stable for at least 6 months after irradiation. If sugar and shell goods left in or around houses since the occurrence of the Chernobyl reactor and the Brazilian accidents were obtained, it would be possible to estimate from them the integrated external dose to exposed people.




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