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Related Concept Videos

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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.
Atomic Spectroscopy: Absorption, Emission, and Fluorescence01:23

Atomic Spectroscopy: Absorption, Emission, and Fluorescence

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...
Atomic Fluorescence Spectroscopy01:29

Atomic Fluorescence Spectroscopy

Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which are...
Atomic Absorption Spectroscopy: Overview01:27

Atomic Absorption Spectroscopy: Overview

Atomic absorption spectroscopy (AAS) is a technique used to analyze elements by measuring electromagnetic radiation (EMR) absorbed by atoms, which causes them to transition to a higher-energy orbit. The most crucial step in AAS is atomization, where the analyte is converted into gas-phase atoms, typically through a flame or furnace. Some of these atoms become thermally excited in the flame, while most remain in the ground state.
When irradiated by EMR of a particular wavelength, these...
Atomic Absorption Spectroscopy: Interference01:25

Atomic Absorption Spectroscopy: Interference

Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...

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Lifetime-broadening-suppressed selective XAFS spectroscopy.

Hisashi Hayashi1

  • 1Department of Chemical and Biological Sciences, Faculty of Science, Japan Women's University, 2-8-1 Mejirodai, Bunkyo, Tokyo 112-8681, Japan. hayashih@fc.jwu.ac.jp

Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry
|January 12, 2008
PubMed
Summary

Lifetime-broadening-suppressed (LBS) state-selective X-ray Absorption Fine Structure (XAFS) spectra are now accessible. This technique uses resonant inelastic x-ray scattering (RIXS) to reveal local electronic and magnetic structures.

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Area of Science:

  • Condensed matter physics
  • Materials science
  • Spectroscopy

Background:

  • Resonant inelastic x-ray scattering (RIXS) is a powerful spectroscopic technique.
  • Extracting X-ray Absorption Fine Structure (XAFS) from RIXS data traditionally faces challenges due to lifetime broadening.
  • Advanced instrumentation is crucial for high-quality RIXS measurements.

Purpose of the Study:

  • To review the methodology for obtaining lifetime-broadening-suppressed (LBS) state-selective XAFS spectra.
  • To demonstrate the potential of LBS-XAFS as an analytical tool for probing material properties.
  • To highlight recent applications of this technique.

Main Methods:

  • Analysis of RIXS data using formulae derived from the Kramers-Heisenberg equation.
  • Utilizing third-generation synchrotron sources for high-brilliance X-ray beams.
  • Employing spectrometers with large acceptance and high-resolution analyzers for data acquisition.

Main Results:

  • Successful deduction of LBS state-selective XAFS spectra from RIXS data.
  • Demonstration of high-quality RIXS data collection capabilities.
  • Validation of LBS-XAFS for determining local electronic and magnetic structures.

Conclusions:

  • LBS state-selective XAFS is a viable technique for detailed material analysis.
  • The combination of advanced synchrotron sources and spectrometers enables high-quality measurements.
  • This method offers significant potential for investigating the electronic and magnetic properties of metal atoms.