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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

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Summary
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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.

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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.