期刊
PHYSICS OF PLASMAS
卷 21, 期 3, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4868733
关键词
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资金
- Laboratory Directed Research and Development program of Los Alamos National Laboratory [DE-AC52-06NA2-5396]
- U.S. Department of Energy
Inertial confinement fusion requires an imploded target in which a central hot spot is surrounded by a cold and dense pusher. The hot spot/pusher interface can take complicated shape in three dimensions due to hydrodynamic mix. It is also a transition region where the Knudsen and inverse Knudsen layer effect can significantly modify the fusion reactivity in comparison with the commonly used value evaluated with background Maxwellians. Here, we describe a hybrid model that couples the kinetic correction of fusion reactivity to global hydrodynamic implosion simulations. The key ingredient is a non-perturbative treatment of the tail ions in the interface region where the Gamow ion Knudsen number approaches or surpasses order unity. The accuracy of the coupling scheme is controlled by the precise criteria for matching the non-perturbative kinetic model to perturbative solutions in both configuration space and velocity space. (C) 2014 AIP Publishing LLC.
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