| 就地计数系统小推车车体屏蔽修正 |
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| 引用本文： | 冯天成,陈伟,龙斌,苏川英,吴睿,程建平,贾明雁.就地计数系统小推车车体屏蔽修正[J].原子能科学技术,2009,43(7):648-653. |
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| 作者姓名： | 冯天成 陈伟 龙斌 苏川英 吴睿 程建平 贾明雁 |
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| 作者单位： | 1. ;清华大学 ;工程物理系，北京 ;100084;2. ;西北核技术研究所，陕西 ;西安 ;710024 ; |
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| 摘 要： | 介绍了应用152Eu面源对就地计数系统(ISOCS)小推车车体屏蔽修正的实验方法和计算方法。BE5030型HPGe探测器配带50mm-90°、50mm-30°或50mm-180°铅准直器，端面向下，垂直地面测量，探测器距地面58.2cm。得到了该测量条件下关注能量γ射线的小推车屏蔽修正因子。并通过最小二乘拟合得到屏蔽因子与γ射线能量的关系式，用以内插获得122～1408keV范围内任意γ射线的小推车车体屏蔽修正因子。
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| 关 键 词： | 就地计数系统 小推车 屏蔽修正因子 |
Shielding Correction to Bodywork of In-Situ Object Counting System |
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| FENG Tian-cheng,CHEN Wei,LONG Bin,SU Chuan-ying,WU Rui,CHENG Jian-ping,JIA Ming-yan.Shielding Correction to Bodywork of In-Situ Object Counting System[J].Atomic Energy Science and Technology,2009,43(7):648-653. |
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| Authors: | FENG Tian-cheng CHEN Wei LONG Bin SU Chuan-ying WU Rui CHENG Jian-ping JIA Ming-yan |
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| Affiliation: | 1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China; 2. Northwest Institute of Nuclear Technology, Xi’an 710024, China ; |
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| Abstract: | This paper presents the methods of experiment and calculation for shielding correction to the bodywork of in-situ object counting system(ISOCS) using a plane source of 152Eu. The shielding correction coefficients were obtained in the conditions that the HPGe detector of BE5030 with the collimators of 50 mm-90°, 50 mm-30° or 50 mm-180°, and the detector distance 58.2 cm from ground surface. The relationships between the shielding correction coefficients and γ-ray energies were fitted by the least square method, for the shielding correction calculation of any energy within 122-1 408 keV by interpolation. |
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| Keywords: | in-situ object counting system bodywork shielding correction coefficient |
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