摘要
分割分布函数法是以x光小角散射数据计算超细粉末粒度分布的方法之一。本文通过优化系数矩阵、另加阻尼因子以及最小二乘法处理,对分割分布函数法求解稳定性进行了研究。全部演算在计算机上完成。结果表明,当满足相应条件时,所求粒度分布的平均偏差不大于所测散射强度的误差。
Dividing Distribution Function (DDF) method is one of the methods by which the particle size distribution of ultrafine powder can be evaluated from its small-angle X-ray scattering data. In this paper, the stability of the solution obtained from DDF method has been studied through optimizing the coefficient matrix, introducing a damping factor and a least square treatment. All the calculations were accomplished with a computer. It was shown that the average deviation of the size distribution obtained is not greater than the error of the scattering intensity measured as long as the corresponding requirements are met.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
1990年第4期199-205,共7页
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