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Michel DT, Davis AK, Goncharov VN, et al. Measurements of the Conduction-Zone Length and Mass Ablation Rate in Cryogenic Direct-Drive Implosions on OMEGA. Phys Rev Lett. 2015;114(15):155002doi: 10.1103/PhysRevLett.114.155002.
Michel, D. T., Davis, A. K., Goncharov, V. N., Sangster, T. C., Hu, S. X., Igumenshchev, I. V., Meyerhofer, D. D., Seka, W., & Froula, D. H. (2015). Measurements of the Conduction-Zone Length and Mass Ablation Rate in Cryogenic Direct-Drive Implosions on OMEGA. Physical review letters, 114(15), 155002. https://doi.org/10.1103/PhysRevLett.114.155002
Michel, D T, et al. "Measurements of the Conduction-Zone Length and Mass Ablation Rate in Cryogenic Direct-Drive Implosions on OMEGA." Physical review letters vol. 114,15 (2015): 155002. doi: https://doi.org/10.1103/PhysRevLett.114.155002
Michel DT, Davis AK, Goncharov VN, Sangster TC, Hu SX, Igumenshchev IV, Meyerhofer DD, Seka W, Froula DH. Measurements of the Conduction-Zone Length and Mass Ablation Rate in Cryogenic Direct-Drive Implosions on OMEGA. Phys Rev Lett. 2015 Apr 17;114(15):155002. doi: 10.1103/PhysRevLett.114.155002. Epub 2015 Apr 14. PMID: 25933317.
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Phys Rev Lett. 2015 Apr 17;114(15):155002. doi: 10.1103/PhysRevLett.114.155002. Epub 2015 Apr 14.

Measurements of the Conduction-Zone Length and Mass Ablation Rate in Cryogenic Direct-Drive Implosions on OMEGA.

Physical review letters

D T Michel, A K Davis, V N Goncharov, T C Sangster, S X Hu, I V Igumenshchev, D D Meyerhofer, W Seka, D H Froula

Affiliations

  1. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA.

PMID: 25933317 DOI: 10.1103/PhysRevLett.114.155002

Abstract

Measurements of the conduction-zone length (110±20  μm at t=2.8  ns), the averaged mass ablation rate of the deuterated plastic (7.95±0.3  μg/ns), shell trajectory, and laser absorption are made in direct-drive cryogenic implosions and are used to quantify the electron thermal transport through the conduction zone. Hydrodynamic simulations that use nonlocal thermal transport and cross-beam energy transfer models reproduce these experimental observables. Hydrodynamic simulations that use a time-dependent flux-limited model reproduce the measured shell trajectory and the laser absorption but underestimate the mass ablation rate by ∼10% and the length of the conduction zone by nearly a factor of 2.

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