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Abstract Aiming at improving performance of inertial confinement fusion (ICF) targets, we developed synthesis technology of diamond capsules. In direct-drive ICF for which a spherical target capsule is irradiated directly… Click to show full abstract
Abstract Aiming at improving performance of inertial confinement fusion (ICF) targets, we developed synthesis technology of diamond capsules. In direct-drive ICF for which a spherical target capsule is irradiated directly with intense laser light, laser imprinting due to irradiation non-uniformity on the capsule surface degrades symmetry of the target implosion and performance as a result. We demonstrated that material stiffness is the effective parameter for mitigation of laser imprinting [Kato, et al., Phys. Plasmas, 25, 032706 (2018)]. In this study, we fabricated polycrystalline diamond capsules as the ablator material of direct-drive ICF targets by using the hot filament chemical vapor deposition method. The capsule (diameter ~500 μm) with sphericity 99.7%, film thickness
Journal Title: Diamond and Related Materials
Year Published: 2018
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