Mitigation of Laser Imprinting with Diamond Ablator for Direct-Drive Inertial Confinement Fusion Targets

We propose a novel scheme to mitigate the initial perturbation imprinting due to irradiation non-uniformity. Diamond was potential candidate for the ablator material for ICF targets due to its stiffness. The stiffness is very important parameter for imprint mitigation because the laser imprint is pr...

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Bibliographic Details
Published in:Journal of physics. Conference series 2016-03, Vol.688 (1), p.12107
Main Authors: Shigemori, K, Kato, H, Nakai, M, Hosogi, R, Sakaiya, T, Terasaki, H, Fujioka, S, Sunahara, A, Azechi, H
Format: Article
Language:English
Subjects:
Ablative materials
Diamonds
Foils
Inertial confinement fusion
Irradiation
Nonuniformity
Perturbation
Physics
Stiffness
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Summary:We propose a novel scheme to mitigate the initial perturbation imprinting due to irradiation non-uniformity. Diamond was potential candidate for the ablator material for ICF targets due to its stiffness. The stiffness is very important parameter for imprint mitigation because the laser imprint is primary as a function of pressure perturbation due to lase irradiation non-uniformity. We measured the imprint amplitude of diamond foils and plastic (CH) foils. The experimental data suggest the initial imprinting is drastically mitigated for the diamond foils.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/688/1/012107