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相关概念视频

X-ray Crystallography02:18

X-ray Crystallography

23.9K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
23.9K
X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

3.8K
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...
3.8K

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Launching a new era for Short Communications in Journal of Synchrotron Radiation.

Journal of synchrotron radiation·2026
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Sagittal collimating diaboloid: a new grazing-incidence mirror surface for higher-throughput resonant inelastic X-ray scattering spectrometers.

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相关实验视频

Updated: Jul 8, 2025

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
10:12

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

9.1K

一种具有超高角度分辨率的方法,用于X射线衍射实验.

X M Zhang1, X Zheng2, X L Li2

  • 1Institute of Advanced Science Facilities, Shenzhen 518107, People's Republic of China.

Journal of synchrotron radiation
|December 12, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的X射线衍射方法,在测量过程中探测器会移动. 这种技术克服了探测器尺寸的限制,实现了显著更高的分辨率和更好的信号噪声比率.

关键词:
在X射线中,X射线的衍射效果是不同的.结晶的切断棒是一个切断棒.解体解体是一种解体.超级解决方案的超级解决方案

更多相关视频

Synthesis and Microdiffraction at Extreme Pressures and Temperatures
07:26

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Published on: October 7, 2013

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High Pressure Single Crystal Diffraction at PX^2
11:32

High Pressure Single Crystal Diffraction at PX^2

Published on: January 16, 2017

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相关实验视频

Last Updated: Jul 8, 2025

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
10:12

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

9.1K
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
07:26

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Published on: October 7, 2013

11.2K
High Pressure Single Crystal Diffraction at PX^2
11:32

High Pressure Single Crystal Diffraction at PX^2

Published on: January 16, 2017

21.6K

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.
  • 分析化学 分析化学

背景情况:

  • X射线衍射 (XRD) 测量受到探测器角分辨率的限制.
  • 探测器的像素大小创建了一个检测极限,阻碍了获取所需的晶体信息.
  • 现有的方法很难克服这个基本的解决障碍.

研究的目的:

  • 开发一种新的方法来提高X射线衍射中的角分辨率.
  • 为了克服传统探测器的像素大小限制.
  • 为了提高XRD测量的信号噪声比.

主要方法:

  • 一种新的XRD技术,涉及探测器运动和测量同时进行.
  • 应用专门的解卷算法来纠正卷积效应.
  • 抑制高频信号以确保可靠的峰值形状恢复.

主要成果:

  • 成功克服了XRD中的像素大小限制.
  • 与单像素测量相比,实现了近十倍的分辨率增长.
  • 通过测量单晶SrTiO3的晶体截断棒信号来证明可行性.
  • 显著降低噪音和改善信号噪音比.

结论:

  • 拟议的方法有效地打破了X射线衍射中的像素大小限制.
  • 这种技术在实现更高的角分辨率方面提供了实质性的进步.
  • 该方法提供了一种可行的方法,可以获得详细的结晶学信息,并提高数据质量.