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Measurements of the Conduction-Zone Length and Mass Ablation Rate in Cryogenic Direct-Drive Implosions on OMEGA.
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.
Afiliación
  • Michel DT; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA.
  • Davis AK; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA.
  • Goncharov VN; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA.
  • Sangster TC; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA.
  • Hu SX; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA.
  • Igumenshchev IV; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA.
  • Meyerhofer DD; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA.
  • Seka W; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA.
  • Froula DH; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA.
Phys Rev Lett ; 114(15): 155002, 2015 Apr 17.
Article en En | MEDLINE | ID: mdl-25933317
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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Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2015 Tipo del documento: Article País de afiliación: Estados Unidos
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PubMed Links

Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2015 Tipo del documento: Article País de afiliación: Estados Unidos