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Quasi-continuous X-ray generation in LiTaO3-based pyroelectric accelerator driven by periodically varying temperature
P Karataev1, M Ali2, K Fedorov2
1John Adams Institute at Royal Holloway, University of London, Egham, TW20 0EX, Surrey, UK. Pavel.Karataev@rhul.ac.uk.
Scientific Reports
|August 25, 2025
Summary
Researchers developed a compact X-ray source using pyroelectric crystals. This stable, quasi-continuous X-ray beam enables reliable energy-dispersive X-ray spectroscopy for material analysis.
Area of Science:
- Physics
- Materials Science
- Analytical Chemistry
Background:
- Advanced X-ray sources are crucial for studying matter and dynamic systems.
- Large-scale facilities exist, but compact, safe, and reliable X-ray sources are needed.
- Pyroelectric accelerators offer a potential solution for portable X-ray generation.
Purpose of the Study:
- To develop a compact, stable, and controllable X-ray source.
- To investigate the pyroelectric effect for X-ray generation.
- To demonstrate the application of this source in material analysis.
Main Methods:
- Utilized a periodically temperature-varying Lithium Tantalate (LiTaO3) crystal.
- Employed a novel approach for pyroelectric accelerator operation.
- Observed and characterized the electron avalanche process at the anode.
Main Results:
- Generated a stable, quasi-continuous X-ray beam.
- Identified the avalanche phenomenon as key to X-ray production.
- Successfully performed energy-dispersive X-ray spectroscopy on solid samples.
Conclusions:
- The developed compact X-ray source shows great potential for various applications.
- Pyroelectric accelerators offer a viable alternative to large-scale X-ray facilities.
- This technology enables reliable elemental analysis with a portable device.
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