Development towards high-resolution kHz-speed rotation-free volumetric imaging

Area of Science:

• Materials Science
• Physics
• Imaging Technology

Background:

• Conventional rotary tomography can introduce artifacts and limit imaging speed due to sample rotation.
• X-ray multi-projection imaging (XMPI) offers a rotation-free alternative for dynamic 3D imaging.
• Fragile sample dynamics can be better preserved without centrifugal forces.

Purpose of the Study:

• To demonstrate the capability of XMPI for observing rapid 3D dynamics in optically opaque materials.
• To assess the performance of XMPI instrumentation at high frame rates.
• To evaluate XMPI's potential for future X-ray imaging applications.

Main Methods:

• Utilized X-ray multi-projection imaging (XMPI) at the ID19 beamline (ESRF, France).
• Imaged 3D dynamics of melted aluminum at 1000 frames per second with 8 µm resolution per projection.
• Conducted instrumentation tests up to 3000 frames per second.

Main Results:

• Successfully captured 3D dynamics of melted aluminum at 1000 fps.
• Demonstrated the full dynamic range of the detectors was utilized.
• Instrumentation tests confirmed potential for even higher frame rates.

Conclusions:

• XMPI is a promising technique for high-speed, rotation-free 3D imaging of dynamic processes.
• The method is suitable for optically opaque samples, including materials undergoing phase transitions.
• XMPI is well-positioned for integration with next-generation synchrotron light sources.