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Excitation spectroscopy of the acetylene A--X transition in the 220 nm wavelength region

Journal Article · · J. Chem. Phys.; (United States)
DOI:https://doi.org/10.1063/1.443301· OSTI ID:5787006
The fluorescence excitation spectrum of the A /sup 1/A/sub u/--X /sup 1/..sigma../sup +//sub g/ transition of acetylene has been examined in the 220 nm wavelength region. Sharp lines were observed at frequencies that agree with earlier studies using absorption spectroscopy, and most lines previously reported as blended were well resolved. Time-resolved fluorescent decays following excitation in four of the peaks revealed suprisingly long lifetimes (2--5 ..mu..s in the low-pressure limit). Two of the levels exhibited modulation in their fluorescent decays.
Research Organization:
Department of Chemistry and George Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
OSTI ID:
5787006
Journal Information:
J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 76:5; ISSN JCPSA
Country of Publication:
United States
Language:
English