Excitation of Doubly-Charged Ion Emission Lines from a Grimm-Style Glow Discharge Plasma - Comparison between Yttrium and Zirconium

Kazuaki Wagatsuma

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1 Citation (Scopus)

Abstract

Spectra of yttrium and zirconium emitted from a Grimm-style glow discharge plasma were investigated to elucidate the excitation mechanism of doubly-charged ionic lines when using argon-helium mixed gas as well as argon gas alone. The energy sum for exciting doubly-charged ion species of yttrium is slightly smaller compared to the case of zirconium, which yields an interesting correlation in the excitation energy between their ionic species and excited species of helium or argon. The Y III emission lines which were assigned to the 4p65p-4p65s(4p64d) transitions could be observed in the argon-helium mixed gas plasma, but those were hardly excited with argon gas only. The Zr III emission lines did not appear in the spectra emitted by the argon gas plasma nor by the mixed gas plasma. A possible explanation for these phenomena is that the excitation of these ionic species is caused principally by collisional energy transfer from helium species to the analyte atoms.

Original languageEnglish
Pages (from-to)561-572
Number of pages12
JournalSpectroscopy Letters
Volume36
Issue number5-6
DOIs
Publication statusPublished - 2003

Keywords

  • Argon
  • Argon-helium mixed gas
  • Collision of the second kind
  • Doubly-ionized emission lines
  • Excitation and ionization mechanism
  • Glow discharge plasma
  • Yttrium
  • Zirconium

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

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