In order to overcome the difficulties faced on analytically deriving the equation for describing the samll angle light scattering (SALS) patterns from anisotropic objects with arbitrarily director configurations, a Fast Fourior Transformation(FFT) algorithm for the calculation of SALS patterns from the anisotropic objects immersed in an isotropic matrix has been developed.
用快速傅里叶变换计算方法 ( Fast Fourier Transformation,FFT)直接获得高分子材料中介观有序结构小角激光光散射 ( SALS)图案 ,从而对实验获得的球晶和液晶液滴的 SALS图案进行结构预测 。
The high vinyl 1,2-polybutadiene was fractionated by the step precipitation method, and the weight average molecular weight (Mw)and the intrinsic viscosity ([η]) of various fractions were determined respectively by the small angle laser light scattering and viscometry.
采用逐步沉淀分级法对钼系1,2-聚丁二烯(1,2-PB)试样进行了分级,用小角激光光散射法和粘度法分别测定了各级分的(?)_w和[η],以四氢呋喃和甲苯为溶剂订定了1,2-PB在Mark-Howwink方程中的粘度常数K,α值及第二位力系数A_2。
For measuring the inclination of high building,the author applies the method of surveying two small angles and diScusses its principle.
论述测小角法测定高层建筑物竖直轴线上、下相对位移量，以确定倾斜角的原理和方法。
A program for small-angle X-ray scattering(SAXS) data analysis was written in FORTRAN language based on the raw data format in Beijing Synchrotron Radiation Facility.
本文介绍我们自己编写的一个小角散射数据分析程序。
Two kinds of low-angle boundary (mosaic structure) in Ce:YAP were observed by etching figures and rocking-curve.
通过腐蚀形貌和XRD摇摆曲线,观察到了垂直和平行于Ce:YAP[010]方向的两组晶面内存在的小角度晶界(镶嵌结构间界),根据SEM形貌估算出(010)面内小角晶界的夹角为51”;四晶XRD摇摆曲线的结果表明,平行于[010]向的晶面内小角晶界的夹角为58”;摇摆曲线的半峰宽为54”,根据Darwin理论算出理想晶体的半峰宽为17”,并由此分析了晶体的完整性。