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相关概念视频

X-ray Crystallography02:18

X-ray Crystallography

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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...
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Divergence and Curl of Electric Field01:25

Divergence and Curl of Electric Field

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The divergence of a vector is a measure of how much the vector spreads out (diverges) from a point. For example, an electric field vector diverges from the positive charge and converges at the negative charge. The divergence of an electric field is derived using Gauss's law and is equal to the charge density divided by the permittivity of space. Mathematically, it is expressed as
5.7K

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相关实验视频

Updated: Jul 4, 2025

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

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状波束通过圆孔径的对轴尖端衍射.

Riccardo Borghi

    Optics letters
    |February 1, 2024
    PubMed
    概括

    一个新的算法模型波场从拉盖尔-高斯波束通过圆孔径衍射. 这种计算工具可以对尚未探索的奇异光学现象进行高精度的研究.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 计算物理 计算物理
    • 波浪现象是一种波浪现象.

    背景情况:

    • 拉格尔-高斯束在光学研究中具有根本性的作用.
    • 穿孔衍射是波浪物理学中的一个关键现象.
    • 单点光学呈现出独特且未被探索的波浪行为.

    研究的目的:

    • 开发一个半分析计算算法,用于模拟对轴衍射.
    • 为了研究由拉盖尔-高斯束与尖端圆孔口相互作用而产生的波场.
    • 为了使单一光学在简化的几何框架内进行准确的研究.

    主要方法:

    • 一个半分析计算算法的开发.
    • 模拟对轴衍射的建模.
    • 通过圆孔进行拉盖尔-高斯光束传播的模拟.

    主要成果:

    • 该算法准确地模拟了波场.
    • 它允许对衍射模式进行高精度分析.
    • 这项研究有助于探索单一光学.

    结论:

    • 开发的算法是单一光学研究的强大工具.

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    Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
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  • 它可以通过圆孔对光束衍射进行精确的研究.
  • 这项工作为研究尚未探索的光学现象开辟了新的途径.