Modeling of the rf discharge initiation in a negative ion source

S. Yoshinari, T. Hayami, R. Terasaki, Akiyoshi Hatayama, A. Fukano

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The maintenance free rf ion source is expected to be one of the most promising candidates for the negative ion sources of plasma heating for future fusion reactors. As an alternative to the arc-discharge sources, the rf negative ion sources have been developed for H- production. In order to make clear the condition for the discharge initiation of the rf source, we are developing a numerical model using the finite difference time domain Monte Carlo method to analyze the electron energy distribution function in rf field. The numerical result shows that the discharge is not successfully initiated due to the wall loss unless the wall potential is considered. More self-consistent model including ion dynamics to evaluate the wall potential and the electron loss at the wall will be needed in the future.

Original languageEnglish
Article number02A728
JournalReview of Scientific Instruments
Volume81
Issue number2
DOIs
Publication statusPublished - 2010

Fingerprint

Ion sources
negative ions
ion sources
Negative ions
Plasma heating
Electrons
Fusion reactors
Distribution functions
plasma heating
fusion reactors
Numerical models
arc discharges
Monte Carlo methods
maintenance
Monte Carlo method
energy distribution
distribution functions
Ions
electron energy
ions

ASJC Scopus subject areas

  • Instrumentation

Cite this

Yoshinari, S., Hayami, T., Terasaki, R., Hatayama, A., & Fukano, A. (2010). Modeling of the rf discharge initiation in a negative ion source. Review of Scientific Instruments, 81(2), [02A728]. https://doi.org/10.1063/1.3311560

Modeling of the rf discharge initiation in a negative ion source. / Yoshinari, S.; Hayami, T.; Terasaki, R.; Hatayama, Akiyoshi; Fukano, A.

In: Review of Scientific Instruments, Vol. 81, No. 2, 02A728, 2010.

Research output: Contribution to journalArticle

Yoshinari, S, Hayami, T, Terasaki, R, Hatayama, A & Fukano, A 2010, 'Modeling of the rf discharge initiation in a negative ion source', Review of Scientific Instruments, vol. 81, no. 2, 02A728. https://doi.org/10.1063/1.3311560
Yoshinari, S. ; Hayami, T. ; Terasaki, R. ; Hatayama, Akiyoshi ; Fukano, A. / Modeling of the rf discharge initiation in a negative ion source. In: Review of Scientific Instruments. 2010 ; Vol. 81, No. 2.
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