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相关概念视频

Determination of Crystal Structures01:29

Determination of Crystal Structures

118
In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
118

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相关实验视频

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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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通过二维X射线探测器实现纳秒时间分辨率.

Yuriy Chushkin1, Jonathan Correa2, Alexandr Ignatenko3

  • 1ESRF - The European Synchrotron, 71 avenue des Martyrs, 38000 Grenoble, France.

Journal of synchrotron radiation
|August 18, 2025
PubMed
概括

这项研究展示了使用事件驱动模式的X射线探测器的纳秒分辨率,使得能够捕获众多图像. 这一突破克服了研究快速动态过程的像素限制.

关键词:
时间点x4时间点x4一个X射线探测器.在XPCS中使用XPCS.光子科学是科学上的.

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Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
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科学领域:

  • 物理 物理学 物理
  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术

背景情况:

  • 快速的X射线探测器通常存储有限的图像,由于在像素内存的限制.
  • 在许多中实现高时间分辨率对于动态过程研究至关重要.

研究的目的:

  • 为了在大量图像上展示纳秒分辨率,使用像素阵列X射线探测器的事件驱动模式.
  • 通过分析纳米粒子的布朗动力学来测试这种模式的性能.

主要方法:

  • 在事件驱动模式下操作原型X射线探测器.
  • 将交叉相关性分析应用于邻近的像素,以克服像素死亡时间.
  • 测量合纳米粒子的布朗动力学.

主要成果:

  • 实现了小于100纳秒的时间分辨率.
  • 成功克服了像素死亡时间限制.
  • 证明了记录大量图像以纳秒分辨率的能力.

结论:

  • 事件驱动模式为大量图像提供纳秒分辨率.
  • 交叉相关性分析是有效的克服像素死时间.
  • 这种方法可以扩展到各种时间分辨率衍射,散射和成像技术.