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- C. Bellei
- Lawrence Livermore National Laboratory 1 , 7000 East Avenue, Livermore, California 94550, USA
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- P. A. Amendt
- Lawrence Livermore National Laboratory 1 , 7000 East Avenue, Livermore, California 94550, USA
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- S. C. Wilks
- Lawrence Livermore National Laboratory 1 , 7000 East Avenue, Livermore, California 94550, USA
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- M. G. Haines
- The Blackett Laboratory, Imperial College 2 , London SW7 2AZ, United Kingdom
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- D. T. Casey
- Lawrence Livermore National Laboratory 1 , 7000 East Avenue, Livermore, California 94550, USA
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- C. K. Li
- Plasma Science and Fusion Center, Massachusetts Institute of Technology 3 , Cambridge, Massachusetts 02139, USA
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- R. Petrasso
- Plasma Science and Fusion Center, Massachusetts Institute of Technology 3 , Cambridge, Massachusetts 02139, USA
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- D. R. Welch
- Voss Scientic, Albuquerque 4 , New Mexico 87108, USA
書誌事項
- 公開日
- 2013-01-01
- DOI
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- 10.1063/1.4773291
- 公開者
- AIP Publishing
この論文をさがす
説明
<jats:p>It is shown by means of multi-fluid particle-in-cell simulations that convergence of the spherical shock wave that propagates through the inner gas of inertial confinement fusion-relevant experiments is accompanied by a separation of deuterium (D) and tritium (T) ions across the shock front. Deuterons run ahead of the tritons due to their lower mass and higher charge-to-mass ratio and can reach the center several tens of picoseconds before the tritons. The rising edge of the DD and TT fusion rate is also temporally separated by the same amount, which should be an observable in experiments and would be a direct proof of the “stratification conjecture” on the shock front [Amendt et al., Phys. Plasmas 18, 056308 (2011)]. Moreover, dephasing of the D and T shock components in terms of density and temperature leads to a degradation of the DT fusion yield as the converging shock first rebounds from the fuel center (shock yield). For the parameters of this study, the second peak in the fusion yield (compression yield) is strongly dependent on the choice of the flux limiter.</jats:p>
収録刊行物
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- Physics of Plasmas
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Physics of Plasmas 20 (1), 012701-, 2013-01-01
AIP Publishing