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※ 半角英数字
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Application of voxel phantoms and Monte Carlo method to whole-body counter calibrations

全身カウンタ校正におけるボクセルファントムとモンテカルロ法の適用

木名瀬 栄; 高木 俊治*; 野口 宏; 斎藤 公明

Kinase, Sakae; Takagi, Shunji*; Noguchi, Hiroshi; Saito, Kimiaki

全身カウンタの校正において、ボクセルファントムとモンテカルロ法を用いた数学的校正手法の適用を行った。ボクセルファントムとモンテカルロ法を用いた全身カウンタの数学的校正手法による結果は、実測による校正結果と良い一致を示し、その妥当性が確認された。

In the Japan Atomic Energy Research Institute (JAERI), a calculation code -UCWBC code- for whole-body counter calibrations using voxel phantoms has been developed as an EGS4 Monte Carlo user code. To validate the UCWBC code for calibrating whole-body counters in JAERI, response functions and counting efficiencies of a p-type high-purity Ge semiconductor detector used for the whole-body counter were evaluated for a water-filled block-shape phantom by the UCWBC code and were measured by experiments. Furthermore, counting efficiencies of the Ge semiconductor detector for the male and female voxel phantoms developed in JAERI were evaluated in the photon energy range 60-1836 keV by the UCWBC code in order to examine the differences between the counting efficiencies for voxel phantoms. In conclusion, it was found that the response functions and counting efficiencies of the Ge semiconductor detector by the UCWBC code for the water-filled block-shape phantom are in good agreement with measured data. The UCWBC code was validated by the comparisons.

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パーセンタイル:25.27

分野:Environmental Sciences

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