About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Characterization of Materials through High Resolution Coherent Imaging
|
Presentation Title |
Imaging Laser Shockwave Dynamics in Defect-bearing Ablator Materials |
Author(s) |
Daniel Steven Hodge, Silvia Pandolfi, Andrew FT Leong, David S Montgomery, Arianna Gleason, Richard L Sandberg |
On-Site Speaker (Planned) |
Daniel Steven Hodge |
Abstract Scope |
Material design and fabrication are two factors that have advanced fusion energy research in the past decade. However, material defects in ablators, such as micro-voids that arise from fabrication processes, causes degradation to energy yield in inertial confinement fusion (ICF) experiments, hindering fusion energy progress. At the Matter in Extreme Conditions instrument at the Linac Coherent Light Source we combine femtosecond x-ray pulses with laser driven shock compression to analyze the shock response of ICF-related materials such as low-density polymers containing hollow silica micro-voids. We image the inhomogeneities in the shock front, giving insight into the void collapse process in extreme conditions at the micron scale. To minimize the influence of low- and high-frequency artifacts in the images, we incorporate principal component analysis and image alignment. By performing phase retrieval on the flat-field corrected images we can obtain the areal density of a dynamically compressed material from a single image. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Polymers, Other |