Radiofrequency antenna for suppression of parasitic discharges in a helicon plasma thruster experiment

研究成果: Review article査読

20 被引用数 (Scopus)

抄録

A radiofrequency (rf) antenna for helicon plasma thruster experiments is developed and tested using a permanent magnets helicon plasma source immersed in a vacuum chamber. A magnetic nozzle is provided by permanent magnets arrays and an argon plasma is produced by a 13.56 MHz radiofrequency helicon-wave or inductively-coupled discharge. A parasitic discharge outside the source tube is successfully suppressed by covering the rf antenna with a ceramic ring and a grounded shield; a decrease in the ion saturation current of a Langmuir probe located outside the source tube is observed and the ion saturation current on axis increases simultaneously, compared with the case of a standard uncovered rf antenna. It is also demonstrated that the covered antenna can yield stable operation of the source.

本文言語English
論文番号083508
ジャーナルReview of Scientific Instruments
83
8
DOI
出版ステータスPublished - 2012 8
外部発表はい

ASJC Scopus subject areas

  • 器械工学

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