Spectroscopic Detection of the Aluminum Carbide Molecule
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Date
1992
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Ohio State University
Abstract
The spectrum of the AIC molecule has been observed for the first time, in emission from a composite wall hollow cathode source. The 0-0, 1-1, 0-1, 1-2, 2-3 and 3-4 bands of the $B^{4}\Sigma^{-}-X^{4}\Sigma^{+}$ system were recorded at Doppler limited resolution with the 1m Fourier transform spectrometer at Kitt Peak National Observatory. The spectrum was fairly weak with a signal-to-noise of about 10 for the strongest lines in the 0-0 band. The bands are blue degraded and show the characteristic constant doubling of a $^{4}\Sigma-^{4}\Sigma$ transition. The origin is at $22460 cm^{-1}$ in excellent agreement with recent high level theoretical calculations [1]. A full analysis of the observed bands will be presented.
Description
1. C. W. Bauschlicher, JR., S. R. Langhoff and LGM. Pettersson, J. Chem. Phys. 89, 5747-5752 (1988).
Author Institution: Phillips Laboratory/RKFE
Author Institution: Phillips Laboratory/RKFE