Fundamental factors affecting thermonuclear ignition
Fundamental factors affecting thermonuclear ignition
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DOI：
10.1088/1741-4326/ac12ea
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发表时间：
2021-09-01
期刊：
影响因子：
3.3
通讯作者：
Thomas, Cliff A.
中科院分区：
文献类型：
--
作者：
Cheng, Baolian;Bradley, Paul A.;Thomas, Cliff A.
最近在国家点火装置（NIF）上进行的惯性约束聚变实验提高了性能和可解释性。这些结果有助于我们解决流体动力效率、推进器绝热、夯实和热点约束等问题，因为它们与点火标准有关。与现有文献相比，我们提出了严格的传播烧伤要求。讨论了推力绝热对冷、热DT能量分配的影响，以及中子下散射比的观测值与模拟值之间的持续差异。本文还讨论了在给定激光能量下实现NIF点火所需的能量和优化或提高胶囊产率的途径。
Recent inertial confinement fusion experiments on the National Ignition Facility (NIF) have improved performance and interpretability. These results help us address hydrodynamic efficiency, pusher adiabat, tamping, and hot-spot confinement as they pertain to criteria for ignition. We present requirements for propagating burn that are stringent compared to existing literature. The effects of the pusher adiabat on the energy partition for the cold and hot DT are addressed, as well as the persistent discrepancy between the observed and simulated neutron down scattering ratio. The required energy for achieving ignition on NIF and paths forward to optimize or increase the capsule yields for given laser energy are also discussed.