论文标题
应用于EBSD abInitio索引的系统缺勤和广义沃尔夫的分布规则
Distribution rules of systematic absence and generalized de Wolff figure of merit applied to EBSD ab-initio indexing
论文作者
论文摘要
对于EBSD AB-Initio索引，报道了一种新方法，该方法采用了最初发明的用于粉末索引的几种方法。系统缺勤和错误稳定的Bravais晶格确定的分布规则用于消除可见频段的不可访问带和错误信息的负面影响。另外，提出了De Wolff的广义版本，以作为获得的单位细胞参数的新分类标准，可用于定向确定和kikuchi模式的Ab-Initio索引。计算结果表明，新的功能符号效果很好，类似于原始的de Wolff $ m_n $。还指出了索引解决方案的歧义，这特别是对于低对称性细胞，即使给出了带中心线和投影中心非常精确的位置，也可能会产生多个不同的溶液。
For EBSD ab-initio indexing, a new method that adopts several methods originally invented for powder indexing, is reported. Distribution rules of systematic absence and error-stable Bravais lattice determination are used to eliminate negative influence of non-visible bands and erroneous information from visible bands. In addition, generalized versions of the de Wolff figures of merit are proposed as a new sorting criterion for the obtained unit-cell parameters, which can be used in both orientation determination and ab-initio indexing from Kikuchi patterns. Computational results show that the new figures of merit work well, similarly to the original de Wolff $M_n$. Ambiguity of indexing solutions is also pointed out, which happens in particular for low-symmetric cells, and may generate multiple distinct solutions even if very accurate positions of band center lines and the projection center are given.
