Development of high-density helicon plasma sources and their applications
Development of high-density helicon plasma sources and their applications
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DOI：
10.1063/1.3096787
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发表时间：
2009-04
影响因子：
2.2
通讯作者：
S. Shinohara;T. Hada;T. Motomura;Kenji Tanaka;T. Tanikawa;K. Toki;Yoshikazu Tanaka;K. P. Shamrai
中科院分区：
文献类型：
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作者：
S. Shinohara;T. Hada;T. Motomura;Kenji Tanaka;T. Tanikawa;K. Toki;Yoshikazu Tanaka;K. P. Shamrai
我们报告独特的，高密度螺旋等离子体源的发展，并描述其应用。表征的最大的螺旋等离子体源之一尚未建成。颗粒产生效率的定标来自公开文献中的各种等离子体产生装置和我们自己的来自长和短圆柱体装置的数据，即，纵横比A（轴向长度与直径的比率）的高值和低值，考虑简单扩散模型框架中的功率平衡。一个高的等离子体生产效率的证明，我们澄清的结构，激发波在低A区域下降到0.075（大设备直径为73.8厘米，轴向长度短至5.5厘米）。我们描述了应用等离子体推进使用一个新的概念，采用无电极。产生了密度为1013 cm−3的极小直径（2.5 cm）螺旋等离子体，并简要介绍了电磁加速等离子体的初步结果。
We report on the development of unique, high-density helicon plasma sources and describe their applications. Characterization of one of the largest helicon plasma sources yet constructed is made. Scalings of the particle production efficiency are derived from various plasma production devices in open literature and our own data from long and short cylinder devices, i.e., high and low values of the aspect ratio A (the ratio of the axial length to the diameter), considering the power balance in the framework of a simple diffusion model. A high plasma production efficiency is demonstrated, and we clarify the structures of the excited waves in the low A region down to 0.075 (the large device diameter of 73.8 cm with the axial length as short as 5.5 cm). We describe the application to plasma propulsion using a new concept that employs no electrodes. A very small diameter (2.5 cm) helicon plasma with 1013 cm−3 density is produced, and the preliminary results of electromagnetic plasma acceleration are briefly de...