Contribution of hydrogen molecular assisted recombination processes to population of hydrogen atom in divertor simulator MAP-II

Atsushi Okamoto, S. Kado, K. Sawada, Y. Kuwahara, Y. Iida, S. Tanaka

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Electron temperature and density of a hydrogen plasma are measured using laser Thomson scattering in divertor simulator MAP-II. Population of hydrogen atom calculated using the temperature and density are compared to that obtained from Balmer series emission spectroscopy, showing molecular assisted recombinations (MAR) contribute to populating process. One of the MAR, mutual neutralization following negative ion production is indicated by increase of p = 3 excited state, while dissociative recombination of molecular ion (H2+) increases p = 4-6 states.

Original languageEnglish
Pages (from-to)395-399
Number of pages5
JournalJournal of Nuclear Materials
Volume363-365
Issue number1-3
DOIs
Publication statusPublished - 2007 Jun 15

Keywords

  • Collisional-radiative model
  • Divertor plasma
  • H0400
  • MAP-II
  • P0600
  • Spectroscopy
  • Thomson scattering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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