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目的 为估算艇员内照射剂量和评价吸入危害防护提供参数。方法 用 DK - 2 A空气采样器在艇内各舱室采样 ,通过α、β放射性计数测量并计算艇内放射性气溶胶的浓度 ,使用 WM— 2型级联撞击器测定了艇内 舱和 舱的放射性气溶胶粒度分布。结果 潜艇水下航行时 ,艇内的放射性气溶胶逐渐升高 ;气溶胶粒度的活度中值空气动力学直径 (AMAD)的平均值是 (0 .2 2± 0 .0 2 )μm;几何标准偏差的平均值是 (2 .5 7± 0 .2 5 )。结论 潜艇水下航行的时间是影响艇员内照射剂量的重要因素 ;气溶胶粒度的谱型是由小粒子占优势的分布较窄的多分散相 ;气溶胶的粒度分布与其浓度的变化无关。
PURPOSE To provide parameters for estimating internal dosimeters and evaluating inhalation hazard protection. Methods The DK - 2 A air sampler was used to sample in each cabin of the boat. The concentration of radioactive aerosols in the boat was measured and measured by α, β radioactive counts. The cabin and the cabin of the boat were measured by the WM - 2 cascade impactor Radioactive aerosol particle size distribution. As a result, the radioactive aerosols in the boat gradually increased when the submarine was underwater. The mean aerodynamic diameter (AMAD) of the aerosol particle size was (0.22 ± 0.22) μm. The geometric The mean standard deviation was (2.57 ± 0.55). Conclusions Submarine time of underwater navigation is an important factor affecting the internal radiation dose of the crew. The aerosol particle size distribution is dominated by small particles with a narrower polydisperse phase. The particle size distribution of aerosols has nothing to do with the change of concentration.