Other
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...383..459s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 383, Dec. 10, 1991, p. 459-465.
Other
32
Aromatic Compounds, Emission Spectra, Hydrocarbons, Infrared Spectra, Interstellar Matter, Molecular Excitation, Astronomical Spectroscopy, Nebulae, Spectral Line Width, Ultraviolet Radiation
Scientific paper
Infrared emissions are observed from photoexcitation of benzene, naphthalene, phenanthrene, anthracene, pyrene, and their methyl derivatives in the gas phase at 193 nm using an ArF laser as a light source. An emission band with peak at 3.3 microns is observed from all the molecules studied. This band is attributed to the aromatic C-H stretching vibrational modes. In addition to the 3.3-microns band, an emission band at 3.4-3.6 microns is observed from photoexcitation of the methyl derivatives, which is attributed to the C-H stretching vibrational modes of the CH3 group. The observed spectra are compared with the IR emission bands observed in many astronomical objects. The current laboratory data lend support to a model in which PAH molecules are responsible for the 'unidentified' interstellar IR emissions. IR emissions from the 193-nm excitation of several interstellar molecules other than PAHs are also observed, but they are quite different from the interstellar IR bands.
Lee Clarence L.
Shan Jun
Suton Masako
No associations
LandOfFree
3.3 micron emission from ultraviolet excitation of some aromatic molecules does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with 3.3 micron emission from ultraviolet excitation of some aromatic molecules, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 3.3 micron emission from ultraviolet excitation of some aromatic molecules will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1536816