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水平散射几何中子反射谱仪的三盘斩波器设计 被引量:3

Triple-disk chopper design of horizontal neutron scattering reflectometer
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摘要 为提高水平散射几何中子反射谱仪分辨,希望谱仪前端的中子斩波器能斩出脉冲强度大水平发散度较小的中子脉冲束流,采用新设计的三斩盘斩波器模型,运用Mcstas程序软件考察了不同物理参数下三盘斩波器的中子斩波特性。获得了特定物理条件下相关物理参数对束流强度和发散度的影响关系曲线。计算结果可为水平散射几何中子反射谱仪中三盘斩波器的设计及物理参数的选择提供理论依据。 To improve the resolution of horizontal geometry scattering neutron reflectometer, strong but small divergence neutron pulse after the chopper of reflectometer is expected. Performance of a triple-disk chopper model with different physical parameters was simulated with Mcstas codes. The intensity and divergence as function of different physical parameters in given conditions were obtained. The results can provide theoretical basis for designing triple-disk chopper of a horizontal geometry scattering neutron reflectometer.
出处 《核技术》 CAS CSCD 北大核心 2009年第7期510-514,共5页 Nuclear Techniques
基金 中国工程物理研究院科学技术发展基金(2007B02002)资助
关键词 三盘斩波器 模型设计 Mcstas软件 模拟计算 Triple disk chopper, Model design, Mcstas codes, Simulation
作者简介 李新喜,男,1976年出生,2003年于四川大学原子与分子物理所获硕士学位,从事中子反射谱仪研制与应用技术研究,助理研究员
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参考文献18

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