Depiction of Time-dependent Calibration Curve for y-Ray Irradiater Using Radiophotoluminescence and ESR Dosimetry

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  • ガラス線量計及びESR ドシメトリーを用いるγ線照射装置の時間依存検量線作成
  • ガラスセンリョウケイ オヨビ ESR ドシメトリー オ モチイル ガンマセン ショウシャ ソウチ ノ ジカン イソンケンリョウセン サクセイ

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Time-dependent calibration curve for the γ-ray irradiator was prepared using radiophoto -luminescence (RDPL) and ESR dosimetry. In RDPL measurement, the radiation dose was linearly increased until 38 Gy. However, above 38 Gy, it deviated upward. The ESR signal intensity of γ-irradiated L-α-alanine indicated linear in the range from 0 to 500 Gy. Though ESR signal intensity of L-α-alanine was saturated with the microwave power, the linearity of the calibration curve was reserved at any microwave power (< 5 mW). Summarizing these results, the time-dependent calibration curve was obtained using γ-irradiated L-α-alanine in the range of 0 - 500 Gy after correction by RDPL for the radiation dose below 38 Gy.

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