| 累积法测量土壤氡析出率的模拟计算 |
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| 引用本文： | 陈凌,黄隆,谢建伦,刘森林,袁大庆.累积法测量土壤氡析出率的模拟计算[J].辐射防护,2000,20(4):205-209,253. |
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| 作者姓名： | 陈凌 黄隆 谢建伦 刘森林 袁大庆 |
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| 作者单位： | 中国原子能科学研究院,北京,102413 |
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| 摘 要： | 通过氡在土壤中产生，衰变和扩散迁移规律的分析，建立模型，用数值方法模拟计算了累积法测量氡析出率时，集氡罩内氡浓度与氡析出率随时间变化规律。分析后认为用有效衰变常数计算氡析出率时，集氡罩应有一定高度，而底部面积应当较小；用氡浓度增长曲线线部分的斜率，计算氡析出率时，集氡罩高度应当较低一些，但要适用选取累积时间，集 底部面积则可适当大一些。
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| 关 键 词： | 氡析出率 模拟计算 土壤 累积法 集氡罩 |
A MODEL CALCULATION OF SOIL RADON EXHALATION RATE MEASURING |
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| Chen Ling,Huang Long,Xie Jianlun,Liu Sengling,Yuan Daqing.A MODEL CALCULATION OF SOIL RADON EXHALATION RATE MEASURING[J].Radiation Protection,2000,20(4):205-209,253. |
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| Authors: | Chen Ling Huang Long Xie Jianlun Liu Sengling Yuan Daqing |
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| Affiliation: | Chen Ling
,Huang Long
,Xie Jianlun
,Liu Sengling
,Yuan Daqing
(China Institute of Atomic Energy, Beijing, 102413) |
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| Abstract: | By analyzing the source, decay and diffusing transport, the mathematics model used to calculate distribution and radon exhalation rate was developed. The result shows that the closed-can method is limited by the can's size. For using the effective decays constant or line slope of radon concentration curve to calculate the exhalation rate, the height of the can should be more than a certain value which is 0.5 m in this case, and the radius of the can, for the former should be small, for the latter large. ( |
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| Keywords: | Radon Exhalation Rate Model Calculating Effective Decay Constant Line Slope) |
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