Speaker
Description
Betatron x-rays from a laser wakefield accelerator provide a new avenue for high-resolution, high-throughput radiography of dense materials. Here, we demonstrate the optimization of betatron x-rays for high-throughput x-ray imaging of metal alloys at the laser repetition rate of 2.5 Hz. Using the Advanced Laser Light Source in Varennes, QC, we characterized the x-ray energy spectrum, spatial resolution, beam stability, and emission length from helium, nitrogen, and mixed gas (99.5% He, 0.5% N) targets to determine the conditions for optimized imaging quality with minimized acquisition time. The optimized betatron x-ray source at 2.5 Hz was used for high-resolution imaging of micrometer-scale defects in additively manufactured metal alloys, demonstrating the potential of these sources for high-throughput data collection, accelerating the characterization of complex mechanical processes in these materials.
| Keyword-1 | laser plasma accelerators |
|---|---|
| Keyword-2 | x-ray imaging |
