Red and near-infrared laser-induced emission of S2 in an Ar matrix

Su Yu Chiang; Yuan-Pern Lee

doi:10.1063/1.455516

Red and near-infrared laser-induced emission of S₂ in an Ar matrix

Su Yu Chiang^*, Yuan-Pern Lee

^*Corresponding author for this work

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The S₂ emission in the red and near-infrared regions has been reinvestigated using the laser-induced emission technique. Four progressions of S₂ in solid Ar were observed in the emission spectra following excitation in the UV region with a pulsed Nd-YAG laser system. ³⁴S-isotopic shifts allowed the determination of spectroscopic parameters for these progressions. Among them, ν₀₀ = 19 757 and 15 417 cm^-1 for the two progressions with distinct zero-phonon lines (ZPL); ν₀₀ = 19 384 and 15 003 cm^-1 for the other two with no ZPL, respectively. The progressions are assigned as the c ¹Σ_u^-→X³Σ _g^- and the c ¹Σ_u ^-→a ¹Δ_g transitions of S₂ in two matrix sites, respectively. The data yield the T₀ values for the c ¹Σ_u^- and the a ¹Δ _g states. The relative intensities of these four progressions varied with excitation wavelengths and isotopic species.

Original language	English
Pages (from-to)	13-19
Number of pages	7
Journal	The Journal of Chemical Physics
Volume	89
Issue number	1
DOIs	https://doi.org/10.1063/1.455516
State	Published - 1 Jul 1988

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title = "Red and near-infrared laser-induced emission of S2 in an Ar matrix",

abstract = "The S2 emission in the red and near-infrared regions has been reinvestigated using the laser-induced emission technique. Four progressions of S2 in solid Ar were observed in the emission spectra following excitation in the UV region with a pulsed Nd-YAG laser system. 34S-isotopic shifts allowed the determination of spectroscopic parameters for these progressions. Among them, ν00 = 19 757 and 15 417 cm-1 for the two progressions with distinct zero-phonon lines (ZPL); ν00 = 19 384 and 15 003 cm-1 for the other two with no ZPL, respectively. The progressions are assigned as the c 1Σu-→X3Σ g- and the c 1Σu -→a 1Δg transitions of S2 in two matrix sites, respectively. The data yield the T0 values for the c 1Σu- and the a 1Δ g states. The relative intensities of these four progressions varied with excitation wavelengths and isotopic species.",

author = "Chiang, {Su Yu} and Yuan-Pern Lee",

year = "1988",

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doi = "10.1063/1.455516",

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journal = "The Journal of Chemical Physics",

issn = "0021-9606",

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T1 - Red and near-infrared laser-induced emission of S2 in an Ar matrix

AU - Chiang, Su Yu

AU - Lee, Yuan-Pern

PY - 1988/7/1

Y1 - 1988/7/1

N2 - The S2 emission in the red and near-infrared regions has been reinvestigated using the laser-induced emission technique. Four progressions of S2 in solid Ar were observed in the emission spectra following excitation in the UV region with a pulsed Nd-YAG laser system. 34S-isotopic shifts allowed the determination of spectroscopic parameters for these progressions. Among them, ν00 = 19 757 and 15 417 cm-1 for the two progressions with distinct zero-phonon lines (ZPL); ν00 = 19 384 and 15 003 cm-1 for the other two with no ZPL, respectively. The progressions are assigned as the c 1Σu-→X3Σ g- and the c 1Σu -→a 1Δg transitions of S2 in two matrix sites, respectively. The data yield the T0 values for the c 1Σu- and the a 1Δ g states. The relative intensities of these four progressions varied with excitation wavelengths and isotopic species.

AB - The S2 emission in the red and near-infrared regions has been reinvestigated using the laser-induced emission technique. Four progressions of S2 in solid Ar were observed in the emission spectra following excitation in the UV region with a pulsed Nd-YAG laser system. 34S-isotopic shifts allowed the determination of spectroscopic parameters for these progressions. Among them, ν00 = 19 757 and 15 417 cm-1 for the two progressions with distinct zero-phonon lines (ZPL); ν00 = 19 384 and 15 003 cm-1 for the other two with no ZPL, respectively. The progressions are assigned as the c 1Σu-→X3Σ g- and the c 1Σu -→a 1Δg transitions of S2 in two matrix sites, respectively. The data yield the T0 values for the c 1Σu- and the a 1Δ g states. The relative intensities of these four progressions varied with excitation wavelengths and isotopic species.

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Red and near-infrared laser-induced emission of S₂ in an Ar matrix

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