小角散射准直校正中的权重函数

通常X射线小角散射实验数据几乎都需进行准直校正,这要求事先用理论计算方法或实验测定方法得到仪器的权重函数.由于概念上的混乱,目前不少文献中测定权重函数的方法存在一些矛盾和问题.本文从准直校正的基本理论出发,对权重函数的物理意义及测定方法作了阐述和讨论.作为实例,对不同的小角散射仪的权重函数作了测定。

WEIGHTING FUNCTION FOR COLLIMATION CORRECTION IN SMALL-ANGLE X-RAY SCATTERING

Generally, the collimation correction must be made on almost all the measured data of small-angle X-ray scatterings. This requires to first employ either theoretical calculation or experimental determination in obtaining the weighting unctions of the instrument. Due to conceptional confusions, contradictions and fproblems are found to exist in methods of determination of the weighting functions suggested in the current literature.In accordance with the basic theory of collimation correction, the physical meaning of the weighting functions and the method of determination are expounded and discussed. As a practical example, a determination of the weighting functions of different small-angle scattering instruments has been made.