Determination of Whole-Body and Lens Dose Conversion Factors for Japanese Field Mice, Apodemus Speciosus
Determination of Whole-Body and Lens Dose Conversion Factors for Japanese Field Mice, Apodemus Speciosus
复制标题
日本田鼠 Apodemus Speciosus 全身和晶状体剂量转换因子的测定
作者：
Brian J Perri;T. Johnson
摘要2011年3月11日日本福岛核事故导致20 km疏散区内广泛的放射性污染。生活在受污染地区的日本田鼠（Apodemus speciosus）受到来自外部环境污染以及内部沉积的放射性核素的辐射剂量。这些小鼠眼睛透镜中的白内障形成是电离辐射的一种可能的确定性效应;然而，难以确定实际剂量。由于目前不存在日本田鼠眼睛透镜的剂量转换因子，因此使用蒙特卡罗N粒子模拟创建透镜剂量转换因子，并与国际放射防护委员会出版物108参考大鼠全身剂量转换因子进行比较。蒙特卡罗N粒子模拟包括外部来源（在地面和地下接收）对眼睛透镜的剂量，以及内部污染的剂量。尽管出版物108参考大鼠的平均质量几乎是日本田鼠的两倍，但使用Monte Carlo N粒子方法计算的所有剂量转换因子均在出版物108参考大鼠值的约37%范围内。
Abstract The 11 March 2011 Fukushima nuclear accident in Japan resulted in widespread radioactive contamination within the 20 km evacuation zone. Japanese field mice (Apodemus speciosus) living within the contaminated region received radiation doses from external environmental contamination as well as internally deposited radionuclides. Cataract formation in the lens of eyes of these mice is a possible deterministic effect of ionizing radiation; however, determination of actual doses is difficult. Since no dose conversion factors currently exist for the lens of the eyes of Japanese field mice, lens dose conversion factors were created using a Monte Carlo N-Particle simulation and compared to the International Commission on Radiological Protection Publication 108 reference rat whole-body dose conversion factors. Monte Carlo N-Particle simulations included doses to the lens of the eyes from external sources (received while both above and below ground), as well as doses from internal contamination. Although the Publication 108 reference rat is almost twice the average mass of the Japanese field mouse, all dose conversion factor calculations using Monte Carlo N-Particle methods were within approximately 37% of the Publication 108 values for the reference rat.