| γ探测死时间与计数修正因子的关系 |
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| 引用本文： | 伍怀龙,章剑华,储诚胜,胡广春,张昌繁,胡根,龚建,田东风.γ探测死时间与计数修正因子的关系[J].原子能科学技术,2015,49(1):162-165. |
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| 作者姓名： | 伍怀龙 章剑华 储诚胜 胡广春 张昌繁 胡根 龚建 田东风 |
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| 作者单位： | 中国工程物理研究院 核物理与化学研究所，四川 绵阳621900 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 为在γ放射性活度很大的测量中使测量系统得到更好的准确度,本文使用干扰源研究HPGe探测器得到了测量系统死时间与计数损失的关系。在γ能量为0.3~1.3 MeV时进行实验,使用104~105 Bq量级的放射源,修正能峰的计数率一般保持在几十s-1,证明在误差范围(3%)内,计数损失随死时间变化的关系与射线能量和计数强度无关,任意强度的任意核素均可使用这一修正公式进行计数损失修正。
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| 关 键 词： | &gamma 测量 计数损失 死时间 |
Relationship between γDetection Dead-time and Count Correction Factor |
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| WU Huai-long,ZHANG Jian-hua,CHU Cheng-sheng,HU Guang-chun,ZHANG Chang-fan,HU Gen,GONG Jian,TIAN Dong-feng.Relationship between γDetection Dead-time and Count Correction Factor[J].Atomic Energy Science and Technology,2015,49(1):162-165. |
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| Authors: | WU Huai-long ZHANG Jian-hua CHU Cheng-sheng HU Guang-chun ZHANG Chang-fan HU Gen GONG Jian TIAN Dong-feng |
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| Affiliation: | Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China |
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| Abstract: | The relationship between dead-time and count correction factor was investigated by using interference source for purpose of high γ activity measurement. The count rates maintain serval 10 s-1 with γ energy of 0.3-1.3 MeV for 104-105 Bq radioactive source. It is proved that the relationship between count loss and dead-time is unconcerned at various energy and various count intensities. The same correction formula can be used for any nuclide measurement. |
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| Keywords: | γ detection count loss dead-time |
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