| 铀基体中~(237)U208keV γ射线发射率的精确测定 |
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| 引用本文： | 王祥高,何明,李世琢,董克君,肖才锦,姜山.铀基体中~(237)U208keV γ射线发射率的精确测定[J].核技术,2010,33(5). |
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| 作者姓名： | 王祥高 何明 李世琢 董克君 肖才锦 姜山 |
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| 作者单位： | 1. 中国原子能科学研究院核物理研究所,北京,102413
2. 中国原子能科学研究院核物理研究所,北京,102413;广西大学物理科学与工程技术学院,南宁,530004 |
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| 基金项目： | 国家自然科学基金，中国工程物理研究院NSAF基金 |
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| 摘 要： | 运用高比放射性177Lu及主要γ射线能量(208.3664keV)与237U208.000keVγ射线的高度近似性,对U样品中208keVγ射线发射率测量中的自吸收效应,进行了校正。通过测量几何的安排,使级联γ射线的合峰效应可忽略。此法可用于高原子序数物质中低能γ射线发射率的测定。
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| 关 键 词： | 自吸收校正 γ射线发射率 Emission rate of γ rays |
Accurate determination for emission rate of 208 keVγrays of237U in U-containing samples |
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| WANG Xianggao,HE Ming,LI Shizhuo,DONG Kejun,XIAO Caijin,JIANG Shan.Accurate determination for emission rate of 208 keVγrays of237U in U-containing samples[J].Nuclear Techniques,2010,33(5). |
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| Authors: | WANG Xianggao HE Ming LI Shizhuo DONG Kejun XIAO Caijin JIANG Shan |
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| Abstract: | With the availability of177 Lu with highly specific activities and its major γ-ray of 208.3 keV,which is very close to that from 237U(208.000 keV),we developed a simple method to make an accurate correction for severe self-absorption of the 237U γ-ray.Summing effects from cascade γ rays were avoided by careful arrangement of counting geometry that made the effects negligible.This method is feasible for the determinations of emission rates of low energy γ-rays in high Z matrix samples. |
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| Keywords: | 177Lu-U 177Lu-U method Self-absorption correction |
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