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Updated: Jun 4, 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

9.0K

通过将XANES转换为EXAFS,通过一种机器学习方法来解释X射线光谱的痕迹杂质

Micah P Prange1, Niranjan Govind1,2, Panos Stinis3

  • 1Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.

The journal of physical chemistry. A
|December 24, 2024
PubMed
概括

机器学习显示,X射线吸收光谱的近边缘区域含有通常在扩展的X射线吸收细结构 (EXAFS) 中发现的结构信息. 这允许从有限的光谱数据中准确地预测EXAFS,缓解实验约束.

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Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
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Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
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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.
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