Spatiotemporal oscillation of an ion beam extracted from a potential-oscillating plasma source

Kazunori Takahashi, Tsuyoshi Imagi, Masashi Ishitomi, Kenichi Nagaoka, Yasuaki Haba, Haruhisa Nakano, Akira Ando, Masashi Kisaki, Katsuyoshi Tsumori, Katsunori Ikeda

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A radiofrequency oscillation is successfully superimposed on a plasma potential of a filamented source plasma in an ion beam source while maintaining a constant plasma density, in order to investigate effects of oscillating source plasma potential on an extracted ion beam. The experiment is preliminarily performed with a positive argon ion beam source. A class-D amplifier operational over a wide range of a frequency from a few tens of kHz to several MHz is installed; leading the oscillation of the plasma potential in the plasma source for the frequency range being tested. The beam current profile downstream of the extraction grids shows an oscillation of the beam current at the peripheral region of the ion beam; implying that the oscillation of a beam halo is induced by the potential oscillation of the source plasma.

Original languageEnglish
Article number093043
JournalNew Journal of Physics
Volume21
Issue number9
DOIs
Publication statusPublished - 2019 Sep 19

Keywords

  • Ion beam
  • Potential oscillation
  • Rf plasmas

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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