Laser-induced-fluorescence detection of SnO in low-pressure particle-synthesis flames

S. Bailey, Nick G Glumac

Research output: Contribution to journalArticle

Abstract

Ground-state SnO has been observed in a flame for the first time using laser-induced fluorescence. The (18-0) band of the E1Σ+-X1Σ+ transition is used for excitation. SnO is found to rapidly predissociate after excitation, and the tin atom emerges electronically excited, generating a fluorescence spectrum of atomic tin lines. This transition is found to be strong enough to excite in the linear regime, and the discrete nature of the fluorescence spectrum facilitates detection in environments with strong scattering and other interferences. However, quantitative analysis is hindered by a high density of SnO lines due to the many tin isotopes. Spatial SnO profiles in a hydrogen/oxygen/tetra-n-butyltin flame are obtained using this technique, and these profiles are qualitatively similar to metal monoxide profiles in other oxide-synthesis flames.

Original languageEnglish (US)
Pages (from-to)455-461
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume77
Issue number4
DOIs
StatePublished - Oct 1 2003

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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