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Related Experiment Video

Updated: Jul 5, 2025

$Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples$

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

Time-resolved X-ray diffraction diagnostic development for the National Ignition Facility.

K Werellapatha¹, N E Palmer¹, M G Gorman¹

¹Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

The Review of Scientific Instruments

|January 18, 2024

Summary

This summary is machine-generated.

A new experimental platform captures four x-ray diffraction frames during laser-driven compression experiments. This advancement enables detailed study of materials under extreme dynamic pressures at the National Ignition Facility.

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$Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction$

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Published on: May 20, 2018

Area of Science:

* Physics
* Materials Science
* Engineering

Background:

* Understanding material behavior under extreme conditions, such as high pressures generated by lasers, is crucial for various scientific and engineering applications.
* Dynamic compression experiments require sophisticated diagnostics to capture transient material states.

Purpose of the Study:

* To develop and demonstrate an experimental platform for collecting time-resolved X-ray diffraction (XRD) data during laser-driven dynamic compression.
* To enable in-situ measurements of material structure under extreme pressures.

Main Methods:

* Development of a diagnostic imager with ultrafast sensors (2-ns integration time).
* Construction of a custom target assembly for sample support and imager shielding.
* Generation of a quasi-monochromatic X-ray source (10-ns duration) using laser-generated plasma.

Main Results:

* Successful collection of four frames of XRD data along a single line of sight.
* Demonstration of the platform's performance using lead (Pb) ramp compressed to 150 GPa.
* Acquisition of diffraction data illuminated by a Germanium (Ge) X-ray source producing ~7 × 10^11 photons/ns at 10.25 keV.

Conclusions:

* The developed platform provides a novel capability for studying dynamic material compression.
* The results demonstrate the feasibility of obtaining time-resolved structural information at extreme pressures.