Implementation of an Ultrafast X-Ray Imager with an XFEL Multi-Pulse Train to Measure Void Collapse during Laser Driven Shock Compression
ORAL
Abstract
Characterizing the dynamic behavior of ablator materials with defects, such as micro-voids, is crucial in advancing nuclear fusion as a reliable energy source. At the Matter in Extreme Conditions (MEC) Instrument at the Linac Coherent Light Source (LCLS), we use a train of femtosecond x-ray pulses, separated by 2-3 nanoseconds, to study laser-shock compressed micro-voids embedded in polymer. We record 4 dynamic images utilizing an ultra-fast x-ray imaging (UXI) camera. Also, with single pulses, we seek quantitative characterization of the behavior of the shock-compressed void which requires phase retrieval and, subsequently, measurement of the areal density.
*This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, under 2019 Early Career Award. Use of the Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, is supported by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences under Contract No. DE AC02-76SF00515. The Matter in Extreme Conditions (MEC) instrument of LCLS has additional support from the DOE, Office of Science, Office of Fusion Energy Sciences under contract No. DE-AC02-76SF00515.
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Presenters
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Daniel S Hodge
- Brigham Young University