标题： 角灵敏粉末衍射断层摄影中的视差 显示英文标题

标题： Parallax in angular sensitive powder diffraction tomography

摘要： 尽管已经有一些用于确定深度分辨应变分布的方法，每种方法都存在固有的局限性，但断层重构仅在有限的意义上被应用于该问题。 其中一个挑战是几何视差的潜在影响，这会导致来自不同样品深度的衍射信息在探测器处产生不可忽略的横向偏移。 在这里，研究了视差的影响，并得出了两个主要结果。 首先，发现视差的影响与其他偏移贡献是相加的，这意味着可以进行简单的校正。 其次，对于利用完整 360{\deg }旋转的断层扫描，发现视差对角度信息重建没有影响。 显示英文摘要

摘要： While a few methods for the determination of depth-resolved strain distributions each with inherent limitations are available, tomographic reconstruction has been applied to this problem in only a limited sense. One of the challenges was the potential impact of geometric parallax, which constitutes a non-negligible lateral offset of diffraction information arising from different sample depths at the detector. Here, the effect of parallax was investigated and two main results have emerged. First, the impact of parallax was found to be additive to other offset contributions, which implies a straightforward correction. Second, for tomographic scans utilizing a full 360{\deg} rotation parallax has been found to have no impact on reconstructions of angular information.