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An Imaging plate technique for evaluating energy attenuation in evaporated samples with different surface conditions

異なる表面状態での蒸発乾固試料におけるエネルギー減衰評価のイメージングプレート手法

西藤 文博 ; 小嵐 淳  ; 栗原 治; Kim, E.*

Saito, Fumihiro; Koarashi, Jun; Kurihara, Osamu; Kim, E.*

Samples were prepared by evaporating $$^{241}$$Am solution on stainless steel disks with well-polished and non-polished surfaces. The samples were measured with an imaging plate (IP), and then the obtained images were analyzed to evaluate the distribution of radiation sources on the prepared samples. The images for the polished disks generally showed lower uniformity in the distribution than those for the non-polished disks. However, the detailed analysis of the images revealed a poor correlation between the source distribution and the attenuation of radiation energy for the disk samples, indicating that the non-uniformity of distribution was not a primary cause of the attenuation of radiation energy for the samples. The accuracy of activity determination with the IP was also evaluated to show its applicability to the practical use for radiation controls. The IP technique gave accurate estimate of the activity for a known nuclide when the solution samples were prepared on well-polished disks by the direct evaporation method.

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パーセンタイル:19.27

分野:Environmental Sciences

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