Diode-Laser Absorption Spectroscopy of Supersonic Carbon Cluster Beams: the ν 3 Spectrum of C 5
- 5 May 1989
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 244 (4904) , 564-566
- https://doi.org/10.1126/science.11539817
Abstract
A new spectroscopic experiment has been developed in which rovibrational transitions of supersonically cooled carbon clusters, which were produced by laser vaporization of graphite, have been measured by direct-absorption diode-laser spectroscopy. Thirty-six sequential rovibrational lines of the nu 3 band of the C5 carbon cluster have been measured with Doppler-limited resolution. The absorption spectrum is characteristic of a linear molecule with a center of symmetry. Least-squares analysis of the spectrum indicates an effective carbon-carbon bond length of 1.283 angstroms, in good agreement with ab initio quantum chemical calculations. This work confirms the detection of C5 in IRC + 10216 reported in the accompanying paper.Keywords
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