AstroEBSD：用天文学方法探索模式索引的新空间
AstroEBSD: exploring new space in pattern indexing with methods launched from an astronomical approach
摘要：
电子背散射衍射（EBSD）是一种用于在扫描电子显微镜中测量晶体学特征的技术。该技术高度自动化，在许多实验室都很容易使用。EBSD图案索引通常利用原始电子背散射图案（EBSP）来执行。这些模式是软件处理，以定位带中心（有时是边缘），从每个带的结晶指数确定。一旦获得了许多谱带的一致指数，就可以确定并呈现相对于参考样品和检测器取向的晶体取向。不幸的是，由于与晶体对称性相关的挑战，可用的图案索引方法有限，这可能阻碍了该技术的开放式开发。在这篇手稿中，我们提出了一种新的模式索引的方法，卫星定位在夜空中的方法的基础上，并系统地证明其有效性，使用动态模拟和真实的实验模式。释放这个新算法的好处是证明，我们利用这个索引过程中，连同动态的解决方案，提供一些索引解决方案的第一精度评估。在公开一个新的索引算法和软件处理工具包，我们希望这打开EBSD发展给更多的用户。软件代码和示例数据与本文一起发布，用于第三方开发。
英文摘要：
Electron backscatter diffraction (EBSD) is a technique used to measure crystallographic features in the scanning electron microscope. The technique is highly automated and readily accessible in many laboratories. EBSD pattern indexing is conventionally performed with raw electron backscatter patterns (EBSPs). These patterns are software processed to locate the band centres (and sometimes edges) from which the crystallographic index of each band is determined. Once a consistent index for many bands are obtained, the crystal orientation with respect to a reference sample & detector orientation can be determined and presented. Unfortunately, due to challenges related to crystal symmetry, there are limited available pattern indexing approaches and this has likely hampered open development of the technique. In this manuscript, we present a new method of pattern indexing, based upon a method with which satellites locate themselves in the night sky, and systematically demonstrate its effectiveness using dynamical simulations and real experimental patterns. The benefit of releasing this new algorithm is demonstrated as we utilise this indexing process, together with dynamical solutions, to provide some of the first accuracy assessments of an indexing solution. In disclosing a new indexing algorithm, and software processing tool-kit, we hope this opens up EBSD developments to more users. The software code and example data is released alongside this article for 3rd party developments.
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