Precision equation-of-state measurements on National Ignition Facility ablator materials from 1 to 12 Mbar using laser-driven shock waves

A large uncertainty in the design of ignition capsules for use in the National Ignition Campaign (NIC) is the ablator equation of state. In this article, we report equation-of-state measurements for two candidate NIC ablator materials, glow-discharge polymer (GDP), and germanium-doped GDP. These mat...

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Bibliographic Details
Published in:Journal of applied physics 2012-05, Vol.111 (9), p.093515-093515-9
Main Authors: Barrios, M. A., Boehly, T. R., Hicks, D. G., Fratanduono, D. E., Eggert, J. H., Collins, G. W., Meyerhofer, D. D.
Format: Article
Language:English
Subjects:
Ablation
Ablative materials
Computational fluid dynamics
Fluid flow
Fluids
Ignition
Shock waves
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Summary:A large uncertainty in the design of ignition capsules for use in the National Ignition Campaign (NIC) is the ablator equation of state. In this article, we report equation-of-state measurements for two candidate NIC ablator materials, glow-discharge polymer (GDP), and germanium-doped GDP. These materials were driven to pressures of 1 to 12 Mbar using laser-driven shock waves. Hugoniot measurements were obtained using the impedance matching technique with an α -quartz standard. This article presents the first kinematic measurements in the high-pressure fluid regime for these materials, which show to be in close agreement with Livermore equation-of-state model predictions.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4712050