Laser-induced emission of SO in matrices: The c̃ 1 Σ - →ã 1 Δ and the Ã′ 3 Δ→X̃ 3 Σ - transitions

Ching Chi Zen*, Fa Tai Tang, Yuan-Pern Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

The laser-induced emission was observed during irradiation of samples containing Cl 2 SO, SO 2 , or OCS/NO 2 in a Ne matrix by a KrF excimer laser at 248 nm. Two progressions are assigned to SO. The progression in the range 353-601 nm is assigned to the Ã′ 3 Δ→X̃ 3 Σ - transition with ν 00 = 29 494 ± 5 cm -1 , ω″ e = 1151 ± 2 cm -1 and ω″ e x″ e = 6.2 ± 0.2 cm -1 , whereas the progression in the range 491-822 nm is assigned to the c̃ 1 Σ→ã 1 Δ transition with ν 00 = 22564 ± 5 cm -1 , ω″ e = 1115 ± 3 cm -1 , and ω″ e x″ e = 6.8 ± 0.2 cm-1. In an Ar matrix, the corresponding progressions of SO in various matrix sites were also observed. The thermoluminescence lines observed previously from solid Ar correspond to the phonon wings of an unstable site before annealing. A third progression that was also observed is assigned to the emission from the v′ = 1 level of the c̃ 1 Σ - state; its separation by 670 cm -1 from the main c̃→ã progression agrees with the predicted ω′ e of the c̃ 1 Σ - state.

Original languageEnglish
Pages (from-to)8054-8061
Number of pages8
JournalThe Journal of chemical physics
Volume96
Issue number11
DOIs
StatePublished - 1 Jun 1992

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