Theory of plasma contactors used in the ionosphere
Theory of plasma contactors used in the ionosphere
复制标题
电离层中使用的等离子体接触器的理论
DOI：
10.2514/3.25907
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发表时间：
1987
影响因子：
1.6
通讯作者：
D. Hastings
中科院分区：
文献类型：
--
作者：
D. Hastings
等离子体接触器的使用已被提议作为一种增强通过电动系绳的电流的手段。针对一个相对于周围等离子体带正偏压从而收集电子的等离子体接触器，概述了接触器周围等离子体云的一个简单等温球形模型。结果表明，要使显著的电流放大发生，等离子体云必须是湍流的。电流放大的量是作为通过接触器的离子电流的函数而获得的。对于几安培的离子电流，在100 - 500伏的电位降范围内，可以获得2 - 6的放大因子。对于较小的离子电流，可以获得大得多的放大因子。
The use of plasma contactors has been proposed as a means of enhancing the current flow through an electrodynamic tether. A simple isothermal spherical model of the plasma cloud around a contactor is outlined for a plasma contactor which is biased positively with respect to the ambient plasma and hence collects electrons. It is shown that for significant current amplification to occur, the plasma cloud must be turbulent. The amount of current amplification is obtained as a function of the ion current through the contactor. For ion currents of several amperes amplification factors of 2-6 can be obtained for potential drops in the range 100-500 V. For smaller ion currents, much larger amplification factors can be obtained.