Ratio of Balmer line intensities resulting from dissociative excitation of molecular hydrogen in an ionizing plasma

Takashi Fujimoto, Keiji Sawada, Kiyoto Takahata

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

We have estimated the cross section for the production of excited hydrogen atoms from the emission cross sections for Lyman and Balmer lines when molecular hydrogen is dissociated into excited atoms. We have constructed a collisional-radiative model for the system of ground-state hydrogen molecules, excited hydrogen atoms, and protons, in a plasma and have calculated the population density distribution of the excited states. The resulting emission-line intensity ratios for the Balmer series lines are plotted against electron density. We expect these results to be useful for studies of plasmas containing molecular hydrogen, such as occur in the outer region of tokamak plasmas.

Original languageEnglish
Pages (from-to)2315-2319
Number of pages5
JournalJournal of Applied Physics
Volume66
Issue number6
DOIs
Publication statusPublished - 1989
Externally publishedYes

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hydrogen atoms
hydrogen
Balmer series
excitation
cross sections
density distribution
ground state
protons
atoms
molecules

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Ratio of Balmer line intensities resulting from dissociative excitation of molecular hydrogen in an ionizing plasma. / Fujimoto, Takashi; Sawada, Keiji; Takahata, Kiyoto.

In: Journal of Applied Physics, Vol. 66, No. 6, 1989, p. 2315-2319.

Research output: Contribution to journalArticle

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N2 - We have estimated the cross section for the production of excited hydrogen atoms from the emission cross sections for Lyman and Balmer lines when molecular hydrogen is dissociated into excited atoms. We have constructed a collisional-radiative model for the system of ground-state hydrogen molecules, excited hydrogen atoms, and protons, in a plasma and have calculated the population density distribution of the excited states. The resulting emission-line intensity ratios for the Balmer series lines are plotted against electron density. We expect these results to be useful for studies of plasmas containing molecular hydrogen, such as occur in the outer region of tokamak plasmas.

AB - We have estimated the cross section for the production of excited hydrogen atoms from the emission cross sections for Lyman and Balmer lines when molecular hydrogen is dissociated into excited atoms. We have constructed a collisional-radiative model for the system of ground-state hydrogen molecules, excited hydrogen atoms, and protons, in a plasma and have calculated the population density distribution of the excited states. The resulting emission-line intensity ratios for the Balmer series lines are plotted against electron density. We expect these results to be useful for studies of plasmas containing molecular hydrogen, such as occur in the outer region of tokamak plasmas.

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