期刊
PHYSICS OF PLASMAS
卷 28, 期 4, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0044160
关键词
-
资金
- Laboratory Directed Research and Development program of Los Alamos National Laboratory [20200587ECR]
- NSF [PHY-1707272, PHY-2010098]
- NASA [80NSSC18K0646]
- DOE [DESC0018266]
The drift kinetic model presented in this study addresses the free expansion of a thermal plasma from a magnetic nozzle, incorporating trapped and passing orbit types in the mirror expander geometry. It confirms with data from a fully kinetic simulation and is extended to account for a population of fast sloshing ions arising from neutral beam heating within a magnetic mirror.
We present a drift kinetic model for the free expansion of a thermal plasma out of a magnetic nozzle. This problem relates to plasma space propulsion systems, natural environments such as the solar wind, and end losses from the expander region of mirror magnetically confined fusion concepts such as the gas dynamic trap. The model incorporates trapped and passing orbit types encountered in the mirror expander geometry and maps to an upstream thermal distribution. This boundary condition and quasineutrality require the generation of an ambipolar potential drop of similar to 5 T e / e, forming a thermal barrier for the electrons. The model for the electron and ion velocity distributions and fluid moments is confirmed with data from a fully kinetic simulation. Finally, the model is extended to account for a population of fast sloshing ions arising from neutral beam heating within a magnetic mirror, again resulting in good agreement with a corresponding kinetic simulation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据