Infrared emission spectra of benzene and naphthalene - Implications for the interstellar polycyclic aromatic hydrocarbon hypothesis

Details Infrared emission spectra of benzene and naphthalene - Implications for the interstellar polycyclic aromatic hydrocarbon hypothesis Infrared emission spectra of benzene and naphthalene - Implications for the interstellar polycyclic aromatic hydrocarbon hypothesis

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...388l..39b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 388, March 20, 1992, p. L39-L43. Research supported by NSF and DO

Astronomy and Astrophysics

Astrophysics

53

Benzene, Emission Spectra, Infrared Spectra, Interstellar Matter, Naphthalene, Astronomical Spectroscopy, Electron Transitions, Molecular Excitation, Vibrational Spectra

Scientific paper

Results are presented of observations of emissions from the fundamental region (about 3050/cm, 3.3 microns) and first overtone (about 6000/cm, 1.7 micron) of the C-H stretching modes in C6H6 and C10H8 which were performed following UV laser excitations. Wavelength- and time-resolved emission spectra in the 3050/cm region show contributions from anharmonically shifted Delta-v = -1 transitions originating in v = 1, 2, and 3 in C6H6 and v = 1 and 2 in C10H8, as well as underlying continuum emission. The measured anharmonicities agree with literature values, and relative intensities match those predicted by theory for Delta-v = -1 transitions. The emission transition frequencies differ significantly from the corresponding absorption frequencies for both molecules, and depend on the vibrational energy of the emitter. It is concluded that unambiguous identification of the interstellar emitters cannot be established just on the basis of matching the emission frequencies to laboratory absorption spectra.

Affiliated with

Also associated with

No associations

Rating

Infrared emission spectra of benzene and naphthalene - Implications for the interstellar polycyclic aromatic hydrocarbon hypothesis 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 Infrared emission spectra of benzene and naphthalene - Implications for the interstellar polycyclic aromatic hydrocarbon hypothesis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared emission spectra of benzene and naphthalene - Implications for the interstellar polycyclic aromatic hydrocarbon hypothesis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1215559