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首页> 外文期刊>Radiation Protection Dosimetry >CALCULATION OF DOSE RATE CONVERSION FACTORS FOR ~(232)TH, ~(232)TH AND ~(40)K IN CONCRETE STRUCTURES OF VARIOUS DIMENSIONS, WITH APPLICATION TO NIS, SERBIA
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CALCULATION OF DOSE RATE CONVERSION FACTORS FOR ~(232)TH, ~(232)TH AND ~(40)K IN CONCRETE STRUCTURES OF VARIOUS DIMENSIONS, WITH APPLICATION TO NIS, SERBIA

机译:各种尺寸混凝土结构中〜(232)TH,〜(232)TH和〜(40)K剂量率转换因子的计算及其在尼斯,塞尔维亚的应用

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摘要

The absorbed gamma dose rate in indoor air due to natural radionuclides in concrete as a building material was determined in this work. The dose rate conversion factors for ~(238)U, ~(232)Th and ~(40)K, for standard rooms as well as rooms with different sets of dimensions, were evaluated by the point kernel technique, using Harima (geometric progression) build-up factors. The values of the conversion factors, in units (nGy h~(-1) (Bq kg~(-1))-1) calculated for the standard room are: 0.76, 0.91 and 0.070, respectively for ~(238)U, ~(232)Th and ~(40)K. The fitting formula was obtained for dose rate conversion factors, enabling them to be conveniently calculated for a room with arbitrary dimensions. For concrete block samples collected in the area of Nis, Serbia, the measurement of the radionuclide activity concentrations was also carried out. The evaluated absorbed dose rate conversion factors were then applied in the assessment of corresponding indoor gamma dose rates, finding that all the concrete samples fulfilled the usage requirement.
机译:在这项工作中,确定了混凝土中天然放射性核素作为建筑材料在室内空气中吸收的伽马剂量率。对于标准房间以及具有不同尺寸组的房间,〜(238)U,〜(232)Th和〜(40)K的剂量率转换因子通过点核技术使用Harima(几何级数)进行评估)积累因素。标准房的换算系数值(nGy h〜(-1)(Bq kg〜(-1))-1)为〜(238)U,分别为0.76、0.91和0.070。 〜(232)Th和〜(40)K。获得了针对剂量率转换因子的拟合公式,从而可以方便地针对具有任意尺寸的房间计算它们。对于在塞尔维亚尼斯地区收集的混凝土砌块样品,还进行了放射性核素活度浓度的测量。然后将评估的吸收剂量率转换因子应用于相应的室内伽马剂量率的评估,发现所有混凝土样品均满足使用要求。

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  • 来源
    《Radiation Protection Dosimetry 》 |2012年第4期| 361-368| 共8页
  • 作者单位

    Department of Physics, University of Nis, PO Box 224, 18000 Nis, Serbia;

    Institute of Occupational Health, Vojislava Ilica bb, 18000 Nis, Serbia;

    Faculty of Science, University of Kragujevac, R. Domanovica 12, 34000 Kragujevac, Serbia;

    Faculty of Science, University of Kragujevac, R. Domanovica 12, 34000 Kragujevac, Serbia;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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