粉红色:用于X射线发射光谱的X射线光束线
Sergey Peredkov1, Nilson Pereira1, Daniel Grötzsch2
1Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, Mülheim an der Ruhr, Germany.
Journal of synchrotron radiation
|April 25, 2024
概括
在BESSY II的一个新的X射线光束线允许用于稀释样品的高流量,非共振X射线发射光谱 (XES). 它具有先进的光谱仪,用于对各种元素的时间解析研究.
科学领域:
- 同步子辐射科学科学
- 材料科学 材料科学 材料科学
- 原子和分子物理 原子和分子物理
背景情况:
- 射线发射光谱 (XES) 对于研究电子结构至关重要.
- 温和的X射线能量为许多元素的K和L边缘提供了独特的访问权限.
- 对于敏感的XES测量,特别是对于稀释样本,需要高流量光束线.
研究的目的:
- 报告一条针对非共振XES优化的新型高流量光线线的构造和特征.
- 为了使过渡金属和轻元素的X射线研究能够进行招标.
- 为时间解析和双色 XES 实验提供能力.
主要方法:
- 在BESSY II建造一条新的光线线,使用冷冷却波浪器.
- 在PINK模式下使用多层单色仪进行高光子流量的操作.
- 整合两个·哈莫斯光谱仪用于XES测量.
- 样本测量包括复合物,KCl,TiO2和Co3O4.
主要成果:
- 束线提供高光子流量 (10^14光子/秒) 在温和的X射线范围 (2.1-9.5 keV).
- 稀释物质的非共振XES测量是可行的.
- 时间解析的XES实验可以达到0.1秒.
- 用包括氧化物和盐在内的各种样品类型进行了成功的演示.
结论:
- 粉红色光线线是BESSY II的X射线XES软件的一个强大的新仪器.
- 它显著提高了研究过渡金属和轻元素电子结构的能力.
- 未来的升级将包括共振X射线吸收光谱 (XAS) 功能.
更多相关视频
相关概念视频
Atomic Emission Spectroscopy: Instrumentation
378
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
378
Atomic Emission Spectroscopy: Lab
161
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
161
Atomic Absorption Spectroscopy: Radiation and Light Sources
388
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
388
Atomic Emission Spectroscopy: Overview
2.1K
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...
2.1K
Scanning Electron Microscopy
4.2K
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...
Fundamental Principles
Accelerated...
4.2K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
213
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
213


