Jet extraction modes of inertial electrostatic confinement devices for electric propulsion applications

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• 作者：Constanze Syring ; ^{syring@irs.uni-stuttgart.de} ; Georg Herdrich
• 关键词：Inertial electrostatic confinement ; Plasma confinement and extraction ; Plasma composition ; Jet mode ; High speed camera
• 刊名：Vacuum
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：136
• 期：Complete
• 页码：177-183
• 全文大小：1211 K
• 卷排序：136

文摘

The Inertial Electrostatic Confinement (IEC) method is a plasma confinement principle with different operation modes. The work presented investigates the jet mode, which occurs with a jet extraction relevant for space propulsion applications. Two different jet modes were observed, the tight jet mode and the spray jet mode. Depending on propellant, discharge pressure and power these modes occur at different operation conditions and characteristics. Emission spectroscopic investigations show a different plasma species composition of confinement and extraction plasma and the transition between those modes has been examined with a high-speed camera. Finally, the applicability of IEC plasma sources for space propulsion systems is discussed with respect to the experimental results.