沙漠黄土边界带风成沙再生法单片技术等效剂量分布

Equivalent dose distribution of aeolian sand using regenerative -dose single-aliquot protocol

应用再生法单片技术对一个沉积前被充分晒退的沙漠黄土边界带的风成沙样品进行石英绿光释光等效剂量 (ED)测量 ,共测得 12 5个数值。等效剂量范围为 2 .7— 4 .4Gy ,呈一偏正态分布。其中 ,等效剂量为 3.1Gy的数目最多 ,为 30个。 12 5个等效剂量的加权平均值为 3.2 6Gy。沉积前被充分晒退的风成沙不同样片的等效剂量颇有差异。但其加权平均值是接近真实等效剂量的可靠值。

EDs were obtained for an aeolian sample using (SAR). The sample was from loss and desert transitional zone in China. The ED values were from 2.7 to 4.4 Gy, showing a partial Normal School distribution. There were 30 EDs valued 3.1 Gy. The average of all 125 EDs was 3.26 Gy. The EDs obtained by SAR differed even for the well-bleached sample.