在多峰布拉格连贯衍射成像中适应合相位检索
J Nicholas Porter1, Yueheng Zhang2, Ross J Harder3
1Department of Physics and Astronomy Brigham Young University,Provo UT 84602 USA.
概括
对于多峰布拉格连贯衍射成像 (BCDI) 的新合相检索技术,可以同时分析多个布拉格峰. 这种方法增强了晶体成像和应变显微镜,减少了手动数据处理.
科学领域:
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
- 影像成像技术 影像成像技术
背景情况:
- 布拉格连贯衍射成像 (BCDI) 现在经常测量每个晶体的多个布拉格峰值.
- 格子扭曲场来自于这些峰值,提供应变和旋转数据.
- 来自新型同步机的高数据速率需要快速分析.
研究的目的:
- 开发和演示用于多峰BCDI的合相检索技术.
- 为了实现对多个布拉格峰的同时分析,用于3D晶体成像.
- 提高高通量应用的数据处理效率和稳定性.
主要方法:
- 为多峰BCDI数据集实施了一种新的合相检索算法.
- 该技术同时处理来自单一晶粒的所有布拉格峰.
- 跨衍射模式的冗余信息被用于信号校正.
主要成果:
- 该方法产生了晶体形态和格子扭曲的3D图像.
- 它有效地检测和抑制了虚假的探测器信号.
- 适应性合产生了比手动编辑更一致的相形状和更利的表面.
结论:
- 这项新技术能够对多峰BCDI数据进行强大,高通量分析.
- 它支持近乎实时的应变显微镜在现代同步电子设备.
- 减少手工预处理大大简化了科学工作流程.
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