Physics of Plasma Detachment in a Magnetic Nozzle
Physics of Plasma Detachment in a Magnetic Nozzle
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磁喷嘴中等离子体分离的物理学
DOI：
10.2514/6.2006-4653
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
B. Gilchrist
中科院分区：
文献类型：
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作者：
C. Deline;G. Chavers;B. Gilchrist
等离子体脱离外加磁场的演示对于许多未来的空间推进设计至关重要。离子发动机和霍尔推进器不产生磁化等离子体，因此这些技术从未提出过等离子体磁化的问题。几种未来的推进技术，包括螺旋等离子体供应，确实会产生高度磁化的等离子体，这种等离子体可能会或可能不会从施加的磁场中破裂。理论上，足够能量的等离子体流将通过将磁场线拉伸远离等离子体源而与所施加的磁性喷嘴场分离。美国宇航局马歇尔太空飞行中心正在进行实验，旨在研究这种类型的磁分离。本文将介绍该实验的初步结果，特别是密度测量，表明在该实验中发生分离的可能性。
The demonstration of plasma detachment from an applied magnetic field is of paramount importance to many future space propulsion designs. Ion engines and Hall thrusters do not produce a magnetized plasma, so the question of plasma magnetization has never bee n raised for these technologies. Several future propulsion technologies, including helicon plasma supplies, do produce a highly magnetized plasma that may or may not break from the applied magnetic field. It has been theorized that a sufficiently energet ic plasma flow will detach from applied magnetic nozzle fields by stretching the magnetic field lines away from the plasma source. Experiments are being conducted at the NASA Marshall Space Flight Center intending to study this type of magnetic detachment . This paper will present preliminary results from that experiment, specifically density measurements that indicate a possibility of detachment occurring in this experiment.