Analysis of discharge initiation in a RF hydrogen negative ion source

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 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 fusion reactors. In order to make clear the condition for the discharge initiation of the RF source, we are developing an electromagnetic PIC model. The numerical result shows that a positive potential built-up with respect to the wall. As a result, the electron wall loss decreases and the electron density increases. The positive potential plays a key role for the suppression of wall loss and the electron confinement. The electromagnetic-PIC model developed is useful for the analysis of discharge initiation of the RF source.

Original languageEnglish
Title of host publicationSecond International Symposium on Negative Ions, Beams and Sources, NIBS2010
Pages339-347
Number of pages9
DOIs
Publication statusPublished - 2011 Oct 13
Event2nd International Symposium on Negative Ions, Beams and Sources, NIBS2010 - Takayama City, Japan
Duration: 2010 Nov 162010 Nov 19

Publication series

NameAIP Conference Proceedings
Volume1390
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other2nd International Symposium on Negative Ions, Beams and Sources, NIBS2010
CountryJapan
CityTakayama City
Period10/11/1610/11/19

Keywords

  • Initial discharge
  • PIC model
  • Positive potential
  • RF negative ion source

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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