来自ID06-LVP,ESRF的平面解析2D探测器的固角数据的校正和集成
Wilson A Crichton1, Jérôme Kieffer1, Pierre Wattecamps1
1ESRF - The European Synchrotron, 71 Avenue des Martyrs, Grenoble, Rhône-Alpes, France.
Journal of synchrotron radiation
|October 18, 2023
概括
该ESRF ID06-LVP光线使用独特的探测器几何结构,用于连续的2D或近距离解析数据收集. 这种先进的系统能够在大型固体角度上快速,高分辨率地获取粉末衍射数据.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 晶体学 晶体学是指结晶学.
背景情况:
- 欧洲同步射线辐射装置 (ESRF) 的光线ID06-LVP具有独特的衍射几何.
- 这个设置是为高级数据收集功能而设计的.
研究的目的:
- 详细说明了与ID06-LVP光束线的非标准几何形状收集的数据的对齐,校正和集成方法.
- 为了证明系统在所有可访问的固态角度上对连续的二维或向解析数据收集的能力.
主要方法:
- 使用了一个定制的,旋转的Pilatus3 CdTe 900kW探测器.
- 扩展了现有的pyFAI程序,用于处理独特几何形状的数据.
- 在1°的集成间隔收集数据,典型的样本探测器距离为2.0米.
主要成果:
- 实现了大约2.5 m2 (100 Mpx相当) 的数据收集面积,在53 keV的0.65 Å分辨率下.
- 对SRM660a LaB6观察到的标准半最大全宽度 (FWHM) 值在0.005°到0.01°之间.
- 在大约一分钟内完成完整的固角采集,静态的近视角采集需要1-3秒.
结论:
- ID06-LVP光线线的独特几何和探测系统使得有效的,高分辨率的粉末衍射数据收集成为可能.
- 实施的数据处理方法有效地处理来自这种非标准设置的数据.
- 该系统为时间解析和大面积衍射研究提供了显著的优势.
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