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相关概念视频

X-ray Imaging01:24

X-ray Imaging

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

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X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
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相关实验视频

Updated: Jul 20, 2025

Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography
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使用CITIUS探测器进行高分辨率和高灵敏度的X射线图形连贯衍射成像.

Yukio Takahashi1, Masaki Abe2, Hideshi Uematsu2

  • 1Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.

Journal of synchrotron radiation
|August 1, 2023
PubMed
概括

这项研究展示了CITIUS高速X射线探测器用于图形连贯衍射成像 (PCDI). 该探测器实现了高分辨率和相位灵敏度,进步了同步X射线显微镜.

关键词:
西提乌斯 (Citius) 是一个人.摄影图像连贯衍射成像图像绘制.

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High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue
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3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography
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相关实验视频

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High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue
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3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography
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科学领域:

  • 同步 X 射线显微镜.
  • 一致的衍射成像成像.
  • 先进的检测器技术技术的检测器技术.

背景情况:

  • 图形相干衍射成像 (PCDI) 需要高性能同步子源和探测器,以获得最佳的空间分辨率和视野.
  • 提高检测器功能对于提高PCDI性能至关重要.

研究的目的:

  • 使用CITIUS高速X射线图像探测器报告图形学衍射模式测量.
  • 评估CITIUS探测器在PCDI应用中的性能.
  • 为了展示从CITIUS探测器数据的图像重建.

主要方法:

  • 使用了6.5keV的同步X射线,通过总反射镜聚焦,以达到~2.6 × 10^10光子/秒的流量.
  • 采用CITIUS高速X射线图像探测器来收集衍射强度数据,达到~250 Mcounts/s/pixel,没有和.
  • 在测试图和颗粒上进行图形测量,然后进行相位图像重建.

主要成果:

  • 实现了大约10nm的空间分辨率.
  • 获得了大约0.01半径的相位灵敏度.
  • 以高保真度成功进行图像重建.

结论:

  • CITIUS探测器适用于使用低发射同步电子源对各种样品进行PCDI观测.
  • 探测器的功能支持X射线光源的稳定性评估.
  • 这项工作推进了高分辨率的X射线成像技术.