Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5477763 | Matter and Radiation at Extremes | 2017 | 6 Pages |
Abstract
The non-equilibrium between ions and electrons in the hot spot can relax the ignition conditions in inertial confinement fusion [Fan et al., Phys. Plasmas 23, 010703 (2016)], and obvious ion-electron non-equilibrium could be observed by our simulations of high-foot implosions when the ion-electron relaxation is enlarged by a factor of 2. On the other hand, in many shots of high-foot implosions on the National Ignition Facility, the observed X-ray enhancement factors due to ablator mixing into the hot spot are less than unity assuming electrons and ions have the same temperature [Meezan et al., Phys. Plasmas 22, 062703 (2015)], which is not self-consistent because it can lead to negative ablator mixing into the hot spot. Actually, this non-consistency implies ion-electron non-equilibrium within the hot spot. From our study, we can infer that ion-electron non-equilibrium exists in high-foot implosions and the ion temperature could be â¼9% larger than the equilibrium temperature in some NIF shots.
Related Topics
Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
Zhengfeng Fan, Yuanyuan Liu, Bin Liu, Chengxin Yu, Ke Lan, Jie Liu,