保健物理
Online ISSN : 1884-7560
Print ISSN : 0367-6110
ISSN-L : 0367-6110
電子ポケット線量計の性能試験
河野 孝央海老原 寛
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ジャーナル フリー

1991 年 26 巻 3 号 p. 233-238

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Several types of electric pocket dosimeters have been developed recently. These dosimeters are distinguished by use of the silicone semiconductor as a radiation (γ-ray, X-ray) detector. Performance tests of a type of dosimeter named the PDM102 were carried out by using a 60CO point source (about 500kBq). The results showed that the minimum detectable dose equivalent for the dosimeter was 1-2μSv. Excluding cases of exposure from the underside or back of the dosimeter and exposure of less than 10μSv, differences between measured and calculated dose equivalents were less than 10%. Consequently the effect of the dose equivalent rate and dose equivalent (>10μSv) on the response of the detectors was determined to be less than 10%, and the directional dependence was also less than 10%. The dosimeter's response for back exposure was about 70-80% of that for front exposure. And for exposure from the underside of the dosimeter, the measured dose equivalents were equal to or less than approximately 50% of the calculated dose equivalents.

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