ECR中和器改进试验研究

摘要

目前国内电子回旋共振(ECR)中和器的研究存在电子束流不能连续引出的问题,为此通过改进中和器天线结构及优化电子引出孔径来改善中和器的性能.试验结果表明:中和器结构改进及优化后其电子束流可以随着接触电压的升高而连续变化,同时提高了中和器的推进剂利用效率、降低了电子产生损耗.推进剂利用效率和电子产生损耗在中和器结构改进前后分别为1.2789和194.573 W/A,1.6598和126.3 W/A.试验还通过静电探针诊断出中和器耦合天线附近等离子体密度分布在1.72暳1017~12.1暳1017 m-3范围内.%The problem about domestic electron cyclotron resonance neutralizer is that electron beam can't be extracted continuously at the variation of bias voltage. To overcome this, an experiment of neutralizer electron beam extraction was carried out to improve the performance through changing the antenna structure and adjusting the size of the electron extraction aperture. The experimental results show that the electron beam can be extracted continuously with the increasing of the bias voltage.The propellant efficiency and electron energy loss for the improved neutralizer under the operation conditions are 1.6598 and 126.3W/A respectively,while 1.2789 and 194.573 W/A respectively before neutralizer improvement.The plasma density within the neutralizer diagnosed by the Langmuir probe is in the range of 1.72×1017~12.1×1017m-3.