First model of the effect of grain size on radon emanation

被引：31
|
作者：
Sakoda, Akihiro [1 ]
Hanamoto, Katsumi [1 ]
Ishimori, Yuu [2 ]
Kataoka, Takahiro [1 ]
Kawabe, Atsushi [1 ]
Yamaoka, Kiyonori [1 ]
机构：
[1] Okayama Univ, Grad Sch Hlth Sci, Kita Ku, Okayama 7008558, Japan
[2] Japan Atom Energy Agcy, Ningyo Toge Environm Engn Ctr, Kagamino, Okayama 7080698, Japan
来源：
APPLIED RADIATION AND ISOTOPES | 2010年 / 68卷 / 06期
关键词：
Radon emanation; Modeling; Soil; Grain size; Pore gap; Moisture content; MOISTURE-CONTENT; DEPENDENCE; MINERALS; RN;
D O I：
10.1016/j.apradiso.2009.11.070
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The present model represents an improvement on previous models of radon emanation from soil by incorporating soil grain size in addition to moisture. Monte Carlo simulation was employed in the calculation since it was difficult to mathematically express the radon emanation fraction for the present soil model. Grain size is one of the most important factors in describing the properties of soil. Grain size was demonstrated to affect the radon emanation fraction, depending on moisture content. Although the emanation fraction is generally considered to be proportional to grain size, the result of the model calculation suggested that the effect of grain size is not so simple. This study should serve as an initial step toward improving the modeling of this radon emanation. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1169 / 1172
页数：4
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