用带有反宇宙辐射屏蔽的伽马谱仪测定海洋沉积物中的放射性核素的活度。
Determination activity of radionuclides in marine sediment by gamma spectrometer with anti cosmic shielding.
机构信息
University of Science, Faculty of Physics & Engineering Physics, Department of Nuclear Physics, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam.
出版信息
J Environ Radioact. 2010 Sep;101(9):780-3. doi: 10.1016/j.jenvrad.2010.05.003.
In this work, the activities of radionuclides in a marine sediment sample have been determined. The gamma spectrometer comprises an N type coaxial HPGe detector with active shielding to reduce cosmic background. The mass activities of radionuclides have been derived and found to be around a few Bq kg(-1) to several hundreds Bq kg(-1) with relative uncertainties in this paper quoted corresponding to the combined standard uncertainties (k=1).
本工作对海洋沉积物样品中的放射性核素活度进行了测定。该伽马谱仪采用 N 型同轴 HPGe 探测器，具有主动屏蔽功能以减少宇宙本底。放射性核素的质量活度约为几个 Bq kg(-1)到几百个 Bq kg(-1)，本文给出的相对不确定度对应于合并标准不确定度(k=1)。
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