| 中子三轴谱仪分辨函数的模拟计算 |
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| 引用本文： | 刘丽鹃,谢超美,徐家云,阳剑,谢雷.中子三轴谱仪分辨函数的模拟计算[J].原子能科学技术,2009,43(10):921-924. |
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| 作者姓名： | 刘丽鹃 谢超美 徐家云 阳剑 谢雷 |
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| 作者单位： | 1.四川大学，四川 ;成都 ;610064;2. ;中国工程物理研究院，四川 ;绵阳 ;621900 |
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| 摘 要： | 阐述了中子三轴谱仪的工作原理，利用MCSTAS程序模拟计算了分辨函数，分别计算了在弹性散射下能量分辨率、钒样品散射实验的转移能量的扫描和不同转移能量下的分辨函数形态。分析了实验中测量位置的选取与分辨椭圆状态的关系。结果表明，模拟计算能快速地计算出分辨函数形态。
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| 关 键 词： | 三轴谱仪 蒙特卡罗模拟 MCSTAS程序 |
Calculation of Resolution Function for Triple-Axis Neutron Spectrometer |
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| LIU Li-juan XIE Chao-mei XU Jia-yun YANG Jian XIE Lei.Calculation of Resolution Function for Triple-Axis Neutron Spectrometer[J].Atomic Energy Science and Technology,2009,43(10):921-924. |
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| Authors: | LIU Li-juan XIE Chao-mei XU Jia-yun YANG Jian XIE Lei |
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| Affiliation: | 1.Sichuan University, Chengdu 610064, China; 2.China Academy of Engineering Physics, Mianyang 621900, China |
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| Abstract: | The theory of triple-axis neutron spectrometer (TAS) was described briefly. With MCSTAS code based on Monte-Carlo method, the resolution function was calculated at elastic scattering. The energy resolution, the scan of vanadium sample scattering experiment and the resolution function shape of different transferred energy were simulated. The relation between the choice of measuring position in real experiment and the shape of the resolution ellipse was analysed. The result shows that simulation calculation can calculate the shape of resolution function rapidly. |
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| Keywords: | triple-axis neutron spectrometer Monte-Carlo simulation MCSTAS code |
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