Visualization of shocked material instabilities using a fast-framing camera and XFEL four-pulse train
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- Brigham Young Univ., Provo, UT (United States)
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Many questions regarding dynamic materials could be answered by using time-resolved ultra-fast imaging techniques to characterize the physical and chemical behavior of materials in extreme conditions and their evolution on the nanosecond scale. In this work, we perform multi-frame phase-contrast imaging (PCI) of micro-voids in low density polymers under laser-driven shock compression. At the Matter in Extreme Conditions (MEC) Instrument at the Linac Coherent Light Source (LCLS), we used a train of four x-ray free electron laser (XFEL) pulses to probe the evolution of the samples. To visualize the void and shock wave interaction, here, we deployed the Icarus V2 detector to record up to four XFEL pulses, separated by 1-3 nanoseconds. In this work, we image elastic waves interacting with the micro-voids at a pressure of several GPa. Monitoring how the material’s heterogeneities, like micro-voids, dictate its response to a compressive wave is important for benchmarking the performances of inertial confinement fusion energy materials. For the first time in a single sample, we have combined an ultrafast x-ray framing camera and four XFEL pulse train to create an ultrafast movie of micro-void evolution under laser-driven shock compression. Eventually, we hope this technique will resolve the material density as it evolves dynamically under laser shock compression.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
- DOE Contract Number:
- 89233218CNA000001; ECCS-2026822
- OSTI ID:
- 2008269
- Report Number(s):
- LA-UR-21-28603
- Journal Information:
- X-Ray Nanoimaging: Instruments and Methods V, Vol. 11839; Conference: SPIE Optical Engineering + Applications, San Diego, CA (United States), 1-5 Aug 2021
- Country of Publication:
- United States
- Language:
- English
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