| 低水平γ测量的物质屏蔽 |
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| 引用本文： | 田均良,李明荣,李雅琦. 低水平γ测量的物质屏蔽[J]. 水土保持研究, 1987, 0(2): 43-47 |
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| 作者姓名： | 田均良 李明荣 李雅琦 |
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| 摘 要： | 根据环境中低水平放射性测量的要求，选用适宜的多层次屏蔽材料，设制了低水平γ测量的物质屏蔽装置，使 NaI（T1）探测系统的本底降低100倍，满足了10-10居里级的弱放射性样品的测量要求。文中对屏蔽材料的选择，本底的稳定性、剩余本底的来源和进一步降低本底的途径都进行了分析和讨论。
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A Material Shading Equipment for Determination of Low Level Gamma Activities |
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| Tian Junliang,Li Mingrong,Li Yaqi. A Material Shading Equipment for Determination of Low Level Gamma Activities[J]. Research of Soil and Water Conservation, 1987, 0(2): 43-47 |
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| Authors: | Tian Junliang Li Mingrong Li Yaqi |
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| Abstract: | According to requirements for determination of lower Gamma activitles, a material shading equipment has been designed and installed by using multy-layer materials.Background of a Gamma detecting system with a NaI(T1) scintillation detector was reduced 100 times,compared with the original without the shading equipment.It is satisfactory to meet demands for determination of the samples with lower Gamma activities about 10-10 Ci.Some factors,such as choices of suitable materials and the methods for furthar lowerity the background,are discussed in the paper. |
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