Related Experiment Video
Updated: Jun 13, 2026

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
Published on: June 19, 2018
Simultaneous XAFS measurements of multiple samples
B Ravel1, C Scorzato, D P Siddons
1National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. bravel@bnl.gov
A new four-channel ionization chamber enables simultaneous X-ray absorption spectra collection from four samples. This design reduces experimental time and improves accuracy for measuring valence-dependent edge shifts.
Area of Science:
- Materials Science
- Analytical Chemistry
- Spectroscopy
Background:
- X-ray absorption spectroscopy (XAS) is crucial for material characterization.
- Accurate measurement of X-ray absorption edge shifts requires precise energy calibration.
- Simultaneous measurements of multiple samples can improve experimental efficiency.
Purpose of the Study:
- To design and test a novel four-channel ionization chamber for XAS.
- To enable simultaneous X-ray absorption spectra collection from multiple samples.
- To improve the accuracy and efficiency of XAS experiments.
Main Methods:
- A four-channel ionization chamber was designed and constructed.
- The chamber was tested using X-ray absorption spectroscopy.
- Simultaneous transmission spectra were collected from up to four samples.
Main Results:
- The ionization chamber successfully collected X-ray absorption spectra from four samples concurrently.
- The design eliminates systematic uncertainties in energy alignment.
- Absolute measurement of edge shifts between samples of different valence is achievable in a single shot.
- Experimental time was substantially reduced due to parallel measurements.
Conclusions:
- The developed four-channel ionization chamber is a valuable tool for XAS.
- It offers improved accuracy and efficiency for studying materials with different valences.
- The design is adaptable to various XAFS beamlines.
More Related Videos
05:04Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays for High-Throughput Large-Scale Sample Inspection
Published on: June 13, 2023
06:00Biological Samples Preparation for Speciation at Cryogenic Temperature using High-Resolution X-Ray Absorption Spectroscopy
Published on: May 27, 2022
Related Concept Videos
Atomic Force Microscopy
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
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 Fluorescence Spectroscopy
Tandem Mass Spectrometry
Atomic Absorption Spectroscopy: Lab
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing nebulizer...
X-ray Diffraction of Biological Samples
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...