[1]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,(02):43-47.
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,(02):43-47.
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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,(02):43-47.
低水平γ测量的物质屏蔽
《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]
卷:
期数:
1987年02期
页码:
43-47
栏目:
出版日期:
1900-01-01
- Title:
- A Material Shading Equipment for Determination of Low Level Gamma Activities
- 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。
- 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.
参考文献/References:
1. C. E. Crouthamel, Appliad Gamins-Bay Spectrometry, P168-172, 1970
2. Sieghaha. K., Alphs. Bate, and Gamma-Ray Spcetrometsy, P510, 1965
3. 杨基芳等, 原子能科学技术, 第10期, 1965, P853
4. ICRU Report 22, Meuanrameat of Low-level Radisetiviey, P17-22, 1972
5. Brar. S. S, Nelsoa. D. M., and Gustafeoa, P. F., J. Appl, Rad, Isotope, 18, 1989, P281-265.
6. Cnrrie. L. A., Aasl, Chem, 40, 1988, P588.
更新日期/Last Update:
1900-01-01