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A compact x-ray diffraction system for dynamic compression experiments on pulsed-power generators
T Ao1, D V Morgan2, B S Stoltzfus1
1Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
The Review of Scientific Instruments
|June 1, 2022
Summary
A new, cost-effective pulsed X-ray diffraction (XRD) source enables detailed study of materials under high-pressure ramp compression. This advancement aids in understanding dynamic phase transitions and material properties for equation-of-state research.
Area of Science:
- Materials Science
- Condensed Matter Physics
- High-Pressure Physics
Background:
- Pulsed-power generators enable controlled ramp compression of condensed matter.
- Magnetic loading is a key technique for high-pressure equation-of-state studies.
- X-ray diffraction (XRD) provides in-situ data on material behavior under dynamic compression.
Purpose of the Study:
- To develop a cost-effective, compact pulsed X-ray source for XRD measurements.
- To combine magnetic loading ramp compression with a short-pulse XRD diagnostic.
- To enable in-situ investigation of dynamic phase transitions in materials.
Main Methods:
- Utilized pulsed-power generators for magnetic loading and continuous ramp compression.
- Developed and implemented a compact, pulsed X-ray source for X-ray diffraction (XRD).
- Performed XRD measurements on ramp-compressed samples of Zirconium (Zr), Aluminum (Al), and Cadmium Sulfide (CdS).
Main Results:
- Evaluated lattice compression in Zr and Al under dynamic loading.
- Captured signatures of phase transitions in CdS using the new XRD diagnostic.
- Demonstrated the capability for in-situ analysis of dynamic phase transitions.
Conclusions:
- The combination of magnetic ramp compression and pulsed XRD is a powerful tool for dynamic materials research.
- This cost-effective diagnostic enables detailed investigation of high-pressure material behavior.
- The technique is critical for understanding in-situ dynamic phase transitions relevant to equation-of-state studies.
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