ESRとグラニュー糖を利用した放射線量の測定(I)

概要

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This study evaluated ESR radiation dosimetry using granulated sugar. One gram of granulated sugar was irradiated by X-ray radiation under conditions : tube voltage, 60kVp ; tube current, 3mA ; dose rate, 8Gy/min ; and FSD, 7.5cm. After irradiation, the granulated sugar was placed in a quartz sample tube with inner diameter 4.0mm. Then, ESR specteometry was carried out under the conditions : center field, 336mT ; power, 10mW ; sweep width, ±5×10mT ; modulation width, 0.5×0.1mT ; receiver gain, 2×100 ; time constant, 0.1sec ; and sweep time, 4min. Detection and measurements were made at doses of 0, 8, 16, 32, 64, 128, and 160Gy. The results showed that the irradiated granulated sugar produced free radicals and the signal intensities were dose dependent without fading. These findings confirm that ESR radiation dosimetry using granulated sugar would enable estimates of radiation therapy doses.
北海道医療大学の論文
1999-06-30