A Study on Natural Absorbed Dose Rate in Air (Using TLDs) and Concentration of Natural Radionuclides in Soil in All Area of the Osaka Pref.
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概要
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Absorbed dose rates in air at 40 sites throughout Osaka Pref. were measured by TLDs and a relationship between the dose rates and the rates estimated from concentrations of natural radionuclides in the surface soils collected at the sites was studied. The highest and lowest values of air absorbed dose rates obtained in Osaka Pref. were 114.1±1.0, 66.3±2.3nGy/h, respectively, and the former value was obtained at granite zone and the latter at andesite zone. It was found that soil particles smaller than 10 mesh contribute to the dose rates more significantly than those larger than 10 mesh. We found a fairly good correlation between the dose rates and the concentrations of 40K in the surface soils at the sites.
著者
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松並 忠男
大阪府立大学附属研究所
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岡 喬
大阪府立大学先端科学研究所
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恵 和子
大阪府立大学附属研究所アイソトープ総合研究センター
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土居 雅広
現在: 放射線医学総合研究所
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石山 稔雄
大阪府立大学附属研究所, アイソトープ総合針究センター
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恵 和子
大阪府立大学附属研究所, アイソトープ総合針究センター
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石山 稔雄
大阪府立大学附属研究所
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岡 喬
大阪府立大学附属研究所, 放射線科字鮒究センター
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