3D-printed micro-structures irradiated at ICF-relevant intensities show strong laser scattering into channels, and measured erosion speeds broadly match FLASH simulations.
Characterization of foam-filled hohlraums for inertial fusion experiments
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On the path towards high-gain inertial confinement fusion ignition, foams are being considered to tamp the hohlraum wall-motion, and mitigate laser backscattering from Stimulated Raman Scattering (SRS) and Stimulated Brillouin Scattering (SBS). Here we present the results from an experimental campaign on foam-filled hohlraums conducted at the OMEGA laser facility. SiO2 foam-fills, with densities as low as 1 mg/cm3, successfully reduce the gold wall expansion, with laser backscattering comparable to gas-fill.
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physics.plasm-ph 1years
2025 1verdicts
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Experimental and simulative study on laser irradiation of 3D-printed micro-structures at intensities relevant for inertial confinement fusion
3D-printed micro-structures irradiated at ICF-relevant intensities show strong laser scattering into channels, and measured erosion speeds broadly match FLASH simulations.