| 4He闪烁裂变中子探测器的中子灵敏度 |
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| 引用本文： | 张小东,邱孟通,张建福,李宏云,欧阳晓平,张显鹏,张忠兵,陈亮,刘林月.4He闪烁裂变中子探测器的中子灵敏度[J].强激光与粒子束,2012,24(5):1151-1154. |
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| 作者姓名： | 张小东 邱孟通 张建福 李宏云 欧阳晓平 张显鹏 张忠兵 陈亮 刘林月 |
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| 作者单位： | 1.西北核技术研究所, 西安 71 0024 |
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| 摘 要： | 对4He闪烁裂变中子探测器的中子灵敏度进行了理论和实验研究。采用蒙特卡罗方法模拟了不同能量中子和不同厚度裂变靶产生的裂变碎片在4He中的能量沉积，计算结果表明:中子在4He气中的能量沉积曲线和裂变碎片的能量沉积曲线能够互补，从而使探测器对中子的能量响应变得更平坦；探测器的中子灵敏度为10-15 Ccm2量级。并对探测器的中子灵敏度进行了实验标定，实验结果与理论计算结果较为一致。
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| 关 键 词： | 4He闪烁体 裂变碎片 探测器 中子灵敏度 能量沉积 |
| 收稿时间： | 2011/5/6 |
Neutron sensitivity of helium scintillation fission neutron detector |
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| Zhang Xiaodong,Qiu Mengtong,Zhang Jianfu,Li Hongyun,Ouyang Xiaoping, Zhang Xianpeng,Zhang Zhongbing,Chen Liang,Liu Linyue.Neutron sensitivity of helium scintillation fission neutron detector[J].High Power Laser and Particle Beams,2012,24(5):1151-1154. |
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| Authors: | Zhang Xiaodong Qiu Mengtong Zhang Jianfu Li Hongyun Ouyang Xiaoping Zhang Xianpeng Zhang Zhongbing Chen Liang Liu Linyue |
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| Affiliation: | 1.Northwest Institute of Nuclear Technology,P.O.Box 69-9,Xi’an 710024,China |
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| Abstract: | The neutron sensitivity of a helium scintillation fission neutron detector was investigated through theoretical and experimental methods. The energy deposition of neutrons with different energy and fragments of fission targets with different thickness in helium scintillator was calculated based on Monte Carlo method. The energy deposition curves of neutrons and fragments are complementary to each other, so the total energy deposition curve is relatively flatter. The neutron sensitivity was calculated to be 10-15 C·cm2 level. The neutron sensitivity was measured and the theoretical results of neutron sensitivity are consistent with experimental results. |
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| Keywords: | helium scintillator fission fragment detector neutron sensitivity energy deposition |
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