Photoexcitation of dimethyl sulfide and dimethyl disulfide in the vacuum ultraviolet region: Rydberg states and photofragment emissions

Photoabsorption cross sections and fluorescence excitation spectra of dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) vapors have been studied in the 110–220 nm region using synchrotron radiation. For DMS, a new Rydberg series originating from the ns orbital is identified. A number of broad ban...

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Bibliographic Details
Published inChemical physics Vol. 130; no. 1-3; pp. 401 - 408
Main Authors Tokue, Ikuo, Hiraya, Atsunari, Shobatake, Kosuke
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.02.1989
Elsevier
Subjects
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Molecular spectra
Physics
Vacuum ultraviolet spectra
Fluorescence spectrum
Organic disulfide
Gaseous state
Rydberg state
Excitation spectrum
Vibronic transition
Photodissociation
Experimental study
Synchrotron radiation
Vacuum ultraviolet spectrum
Organic sulfide
Organic compounds
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Summary:Photoabsorption cross sections and fluorescence excitation spectra of dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) vapors have been studied in the 110–220 nm region using synchrotron radiation. For DMS, a new Rydberg series originating from the ns orbital is identified. A number of broad bands from DMDS are assigned as Rydberg transitions. Emissions from DMS and DMDS are assigned as the CH3(A-X) band. For DMDS, another emission which is attributable to the S2(B-X) band appears in the excitation below 125 nm. Photodissociation processes forming the excited fragments are discussed.
ISSN:0301-0104
DOI:10.1016/0301-0104(89)87069-7