| 测定γ辐射仪自然底数的方法 |
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| 引用本文： | 贾文懿,方方,唐红,邹力. 测定γ辐射仪自然底数的方法[J]. 地球物理学报,1984,27(04): 371-380, |
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| 作者姓名： | 贾文懿 方方 唐红 邹力 |
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| 作者单位： | 成都地质学院 |
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| 摘 要： | 本文讨论了三种测定γ辐射仪自然底数的方法:水面法、铅屏法和水中法。理论及实验指出,目前国内外广泛使用的水面法和铅屏法难于获得正确的自然底数,指出了其错误之处,并给出了解决这些问题的途径。结果证明,本文提出的水中法是一种简单有效测定γ辐射仪自然底数的方法。只要水域直径在3 m以上,水深2 m,水中的放射性物质微弱,用此法可得到相当近似的自然底数。
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| 关 键 词： | 铅屏 辐射仪 水面 中法 γ辐射 离岸距离 水域 读数 宇宙射线 手持仪器 |
| 收稿时间： | 1983-01-11 |
| 修稿时间： | 1983-03-28 |
DETERMINATION OF THE NATURAL BACKGROUND OF GAMMA-RAY RADIOMETERS |
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| JIA WEN-YI,FANG FANG,TANG HONG,ZOU LI. DETERMINATION OF THE NATURAL BACKGROUND OF GAMMA-RAY RADIOMETERS[J]. Chinese Journal of Geophysics (in Chinese),1984,27(04): 371-380, |
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| Authors: | JIA WEN-YI FANG FANG TANG HONG ZOU LI |
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| Affiliation: | Chengdu Geological College |
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| Abstract: | In this paper,three methods for determining the natural background of Υ-radiometers are studied: the methods of water-surface,lead-screen and submersion. Theoretical analysis and experiments prove it difficult to determine the right background with the first two methods,which are widely used in China,and also abroad. Their faults are pointed out and improved methods are given. The results show that the submersion method,offered by the author,is simple and effective to determine the natural background. In this way,a close approximation to the real value can be obtained when the diameter of water area is over 3 meters,its depth is about 2 meters,and it contains little radioactive material. |
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