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在硬X射线区域的双焦光子镜成像

Xiaojun Bai, Junyong Zhang, Huiya Liu

|April 1, 2024

概括

研究人员开发了一种用于聚焦硬X射线的双焦光子 (PS),使得可变分辨率成像和X射线干扰计等先进应用成为可能. 这一创新提高了等离子体诊断和非破坏性检查等领域的精度.

科学领域:

光学和光子学在光学和光子学.
X射线科学与技术X射线科学与技术
材料科学材料科学材料科学

背景情况:

硬X射线对于血诊断,非破坏性检查和高分辨率成像至关重要.
桌面微焦X射线源通常使用,但功能可能受到限制.
需要先进的聚焦光学来增强硬X射线应用的功能.

研究的目的:

设计和制造一个用于聚焦硬X射线的双焦光子 (PS).
使用新型PS实现可变分辨率成像能力.
探索扩展功能,包括X射线分裂和干扰测量.

主要方法:

双焦光子的设计,最小直径为59.6nm.
使用电子光束光刻法制造PS.
通过使用8.39 keV硬X射线的成像实验来评估性能.

主要成果:

制造的双焦光子 successfully证明了两个不同的焦距.
PS 能够对硬X射线进行聚焦,用于可变分辨率阵列成像.
该设计提供了优化的针孔,提供了更大的控制和功能.

结论:

开发的双焦光子子是有效的聚焦硬X射线与可调节分辨率.
多焦能力为X射线束分裂提供了可能性.
这项技术将干涉测量技术扩展到硬X射线光谱,推进科学仪器仪表.

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X-ray Crystallography

X-ray Crystallography

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...