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Updated: Jul 10, 2026
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Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
Ultrashort 1-kHz laser plasma hard x-ray source.
Optics Letters
|November 17, 2007
Summary
Researchers developed a stable, ultrashort pulse hard x-ray source using a liquid gallium jet. This innovative method generates high photon fluxes for advanced applications like time-resolved X-ray diffraction.
Area of Science:
- Physics
- Materials Science
- X-ray Science
Background:
- Generating ultrashort pulse hard X-rays is crucial for advanced material studies.
- Traditional solid targets for X-ray generation produce significant debris, limiting applications.
Purpose of the Study:
- To develop a continuous, stable, ultrashort pulse hard X-ray point source.
- To overcome debris issues associated with solid targets in X-ray generation.
Main Methods:
- Focused 1.8-W, 1-kHz, 50-fs laser pulses onto a 30-micrometer diameter liquid gallium jet.
- Utilized a novel liquid-metal target for efficient X-ray emission and reduced debris.
Main Results:
- Achieved a stable, continuous ultrashort pulse hard X-ray source.
- Generated photon fluxes of 5x10^8 photons/s.
- Observed a two-component spectrum with a continuum (4-14 keV) and K-alpha/K-beta lines (9.25/10.26 keV).
Conclusions:
- The liquid gallium jet is an effective target for generating high-flux, ultrashort pulse hard X-rays.
- This novel X-ray source minimizes debris, enabling broader applications.
- The source is well-suited for time-resolved X-ray diffraction and other demanding scientific investigations.
