机械速度选择器特征参数计算  

Characteristic Parameters Calculation of Mechanical Velocity Selector

作　　者：陈良[1] 彭梅[1] 孙良卫[1] 李新喜[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,绵阳621900

出　　处：《核电子学与探测技术》2010年第7期925-928,共4页Nuclear Electronics & Detection Technology

基　　金：中国工程物理研究院科学技术发展基金(批准号:2007B02002)资助课题

摘　　要：介绍了中子小角散射谱仪中,中子单色化部件机械速度选择器参数。对速度选择器常数、透过率和波长分辨率作了分析计算,得到了这些参数是由其本身几何参数决定,与入射中子波长无关。阐述了使用山嵛酸银对速度选择器的选择波长标定和使用飞行时间谱仪对其选择波长和波长分辨率测量计算方法。并通过实际速度选择器的计算,得到了速度选择器的相关参数。The monochromation parts is mechanical velocity selector in small angle neutron scattering （SANS） instruments which based on reactor neutron resource, its characteristic parameters were introduced in this paper. The velocity selector constant, transmission and wavelength resolution were determined by itself geometrical parameters through calculating without input neutron wavelength. Choosing wavelength can be calibrated quickly by neutron diffracting Silver Behenate powder, and choosing wavelength and wavelength resolution can be measured by using Time of Flight method. These parameters were calculated at the real velocity selector .

关 键 词：机械速度选择器 特征参数 计算 

分 类 号：TL817.9[核科学技术—核技术及应用]