摘要
描述了参加 1999年由卫生部工业卫生实验所组织的“全国环境水平放射性γ谱方法测量比对”的结果。比对样品包括矿石粉、工业粉尘、可食植物和类似土壤的“准标准物质”。用 HPGeγ谱仪采用刻度系数法或效率曲线法分析了所有比对样品 ,并进行了自吸收校正。测量的核素有 2 3 8U、2 2 6Ra、2 3 2 Th、2 2 8Ra、4 0 K、2 10 Pb、2 0 8Tl、7Be、60 Co和13
Results of environmental radioactivity measurements of national comparison samples by HPGe γ spectrometer are presented. Nuclides include 238 U, 226 Ra, 40 K, 210 Pb, 208 Tl, 7Be, 60 Co and 137 Cs in samples of mineral powder, industrial dust, esculent plant and soil. Bulky liquid sources were prepared of some suitable radio nuclides to calibrate the detector efficiency. Correction was made for self absorption.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2002年第1期92-95,77,共5页
Nuclear Electronics & Detection Technology
