Detection of negative ions produced by charge exchange on oxide surfaces

Kyohei Tashiro, Masako Shindo, Shingo Ishiwata, Ken Ichi Shudo

Abstract

The production of negative ions is one of the key issues in material processing and the neutral beam generation in nuclear fusion devices. Negative ions are known to be produced by the electric charge exchange during the ion scattering on material surfaces. We measured the production of negative ions using stable oxide materials with low work functions, instead of commonly used alkali metals. Negative ions, generated from barium oxide and calcium oxide surface during He+ scattering, are successfully detected by newly established detection system by means of pulse counting with wide dynamic range.

Original languageEnglish
Pages (from-to)83-86
Number of pages4
JournalJournal of the Vacuum Society of Japan
Volume59
Issue number4
StatePublished - 2016

Fingerprint

Negative ions
Oxides
Ion exchange
Scattering
Electric charge
Alkali metals
Barium
Lime
Fusion reactions
Ions

ASJC Scopus subject areas

  • Spectroscopy
  • Materials Science(all)
  • Instrumentation
  • Surfaces and Interfaces

Cite this

Detection of negative ions produced by charge exchange on oxide surfaces. / Tashiro, Kyohei; Shindo, Masako; Ishiwata, Shingo; Shudo, Ken Ichi.

In: Journal of the Vacuum Society of Japan, Vol. 59, No. 4, 2016, p. 83-86.

Research output: Contribution to journalArticle

Tashiro, Kyohei; Shindo, Masako; Ishiwata, Shingo; Shudo, Ken Ichi / Detection of negative ions produced by charge exchange on oxide surfaces.

In: Journal of the Vacuum Society of Japan, Vol. 59, No. 4, 2016, p. 83-86.

Research output: Contribution to journalArticle

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