Effects of residual kinetic energy on yield degradation and ion temperature asymmetries in inertial confinement fusion implosions

K. M. Woo, R. Betti, D. Shvarts, A. Bose, D. Patel, R. Yan, P. Y. Chang, O. M. Mannion, R. Epstein, J. A. Delettrez, M. Charissis, K. S. Anderson, P. B. Radha, A. Shvydky, I. V. Igumenshchev, V. Gopalaswamy, A. R. Christopherson, J. Sanz, H. Aluie

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24 引文 斯高帕斯(Scopus)

摘要

The study of Rayleigh-Taylor instability in the deceleration phase of inertial confinement fusion implosions is carried out using the three-dimensional (3-D) radiation-hydrodynamic Eulerian parallel code DEC3D. We show that the yield-over-clean is a strong function of the residual kinetic energy (RKE) for low modes. Our analytical models indicate that the behavior of larger hot-spot volumes observed in low modes and the consequential pressure degradation can be explained in terms of increasing the RKE. These results are derived using a simple adiabatic implosion model of the deceleration phase as well as through an extensive set of 3-D single-mode simulations using the code DEC3D. The effect of the bulk velocity broadening on ion temperature asymmetries is analyzed for different mode numbers ℓ=1-12. The jet observed in low mode ℓ=1 is shown to cause the largest ion temperature variation in the mode spectrum. The vortices of high modes within the cold bubbles are shown to cause lower ion temperature variations than low modes.

原文English
文章編號052704
期刊Physics of Plasmas
25
發行號5
DOIs
出版狀態Published - 2018 五月 1

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學

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