Theoretical predictions and experimental detection of the SiC molecule

Details Theoretical predictions and experimental detection of the SiC molecule Theoretical predictions and experimental detection of the SiC molecule

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phrvl..60..197b&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 60, Jan. 18, 1988, p. 197-199. Research supported by the Petroleum Research Fund.

Astronomy and Astrophysics

Astrophysics

58

Cathodes, Chemical Analysis, Emission Spectra, Silicon Carbides, Abundance, Fourier Transformation, Molecular Clouds

Scientific paper

High-resolution Fourier-transform emission spectroscopy from a composite-wall hollow cathode has been used to detect the 0-0 band of the d1Sigma(+)-b1Pi electronic transition of SiC near 6100/cm. An ab initio quantum chemical analysis is used to confirm both the identity of the carrier and the d1Sigma(+)-b1Pi assignment. From the results, the astrophysically important bond lengths r sub 0 = 1.723 A and r sub e = 1.719 A for X3Pi have been obtained with an estimated accuracy of 0.001 A. The present r sub e value is in agreement with the prediction of Bauschlicher and Langhoff (1987).

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