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Related Experiment Video

Updated: Jul 2, 2026

An All-in-one Sample Holder for Macromolecular X-ray Crystallography with Minimal Background Scattering

An All-in-one Sample Holder for Macromolecular X-ray Crystallography with Minimal Background Scattering

Published on: July 6, 2019

Simple adjustable liquid sample holder for x-ray absorption studies.

S C Moss¹, H Metzger, M Eisner

¹Physics Department, University of Houston, Houston, TX 77004, USA.

The Review of Scientific Instruments

|November 1, 1978

Summary

This summary is machine-generated.

This study introduces a novel sample holder for optimizing liquid thickness in X-ray absorption fine structure (XAFS) studies. The device enables precise control for analyzing potassium K-edge absorption in various solutions.

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Area of Science:

Materials Science
Analytical Chemistry
Spectroscopy

Background:

X-ray absorption fine structure (XAFS) spectroscopy is a powerful technique for elemental and chemical state analysis.
Accurate determination of liquid sample thickness is crucial for obtaining reliable XAFS data.

Purpose of the Study:

To develop and present a novel sample holder for rapid optimization of liquid thickness in XAFS studies.
To demonstrate the utility of the sample holder for potassium K-edge measurements in solutions.

Main Methods:

A sample holder design featuring fixed and movable blocks with transparent polypropylene windows.
A micrometer-driven mechanism to squeeze a sealed liquid sample bag, controlling sample thickness.
Application to Extended X-Ray Absorption Fine Structure (EXAFS) and near-edge structure analysis.

Main Results:

The developed sample holder allows for rapid and efficient optimization of liquid sample thickness.
Successful application to the measurement of potassium K-edge absorption (E(0) ≈ 3605 eV) in various solutions.
Demonstrated capability for both EXAFS and near-edge X-ray absorption fine structure studies.

Conclusions:

The described sample holder is effective for precise thickness control in liquid XAFS analysis.
This instrument facilitates improved data acquisition for XAFS and near-edge studies of solutions.
The device offers a practical solution for optimizing XAFS measurements of liquid samples.