大气降雨对环境地表γ空气比释动能率测量影响规律的探讨  

Influence of atmospheric rainfall to γ radiation Kerma rate in surface air

作　　者：许哲[1] 万骏[1] 俞荣生[1] 

机构地区：[1]苏州大学放射医学与公共卫生学院,215123

出　　处：《中华放射医学与防护杂志》2009年第2期224-228,共5页Chinese Journal of Radiological Medicine and Protection

摘　　要：目的探讨降雨对环境地表γ空气比释动能率测量的影响规律，以便修正降雨时环境地表γ空气比释动能率测量结果。方法分析降雨对环境地表γ空气比释动能率测量的影响因素，从理论上建立相关因素的微分方程，并解方程得到降雨对环境地表γ空气比释动能率测量影响规律的数学模型。通过几个实例来分析探讨这一规律。结果降雨对环境地表γ空气比释动能率测量影响规律的数学模型与实测数据曲线的趋势相吻合。结论使用本研究建立的降雨对环境地表γ空气比释动能率测量影响规律的理论公式，可有效地修正降雨对环境地表了空气比释动能率测量影响。Objective To investigate the influence rule of the atmospheric Rainfall to the γ radiation Kerma rate in surface air in order to revise the resuh of its measurement during rainfall. Methods The influence factors of rainfall to the measurement of the γ radiation Kerma rate in air were analyzed and then the differential equation of the correlation factors was established theoretically, and by resolving the equation, the mathematical model was obtained. The model was discussed through several practical examples. Results The mathematical model was coincided with the tendency of curve about the measured data on the influence rule of rainfall to theγ radiation Kerina rate in surface air. Conclusion By using the theoretical formula in this article which is established to explain the relationship between the rainfall and the γ radiation Kerma rate in surface air, the influence of rainfall to the γ radiation Kerma rate in surface air could be correctly revised.

关 键 词：降雨 地表γ辐射 空气比释动能率 氡子体 冲洗因子 

分 类 号：R144[医药卫生—公共卫生与预防医学]