LASER INDUCED FLUORESCENCE SPECTROSCOPY OF JET-COOLED IRON MONOCARBIDE: A ${^{3}}\Delta_{1} \leftarrow {^{3}}\Delta_{1}$ TRANSITION NEAR 493nm
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Date
1995
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Publisher
Ohio State University
Abstract
We report laser induced fluorescence (LIF) spectroscopy of iron monocarbide $(Fe^{12}C, Fe^{13}C)$. To our knowledge, this is the first report of gas phase data on this 3d transition metal monocarbide. FeC was generated in a laser vaporization molecular beam source[1]. Vibronic bands have been recorded for $\nu^{\prime}=0.4$ from $V^{\prime\prime}=0$, in the region from 430 to 500nm. The R-head of the $Fe^{12}C 0-0$ band lies near 493.1nm. Rotational analyses have been performed which indicate that the electronic transition is $^{3}\Delta_{i} \leftarrow ^{3}\Delta_{i}$. No theoretical studies of FeC spectra have been published, however, according to ab initio calculations for the isovalent RuC[2], the ground state of FeC should be a ${^{3}}\Delta_{1}$ state arising from a $1\delta^{3}9\sigma^{1}$ electronic configurations Strong perturbations of the upper state have been observed for several bands.
Description
1. W.J. Balfour, J. Cao, C.V.V. Prasad, and C.X.W. Qian, J. Chem. Phys. 101, 10343 (1994) 2. I. Shim, H.C. Finkbeiner, and K.A.Gingerich. J. Phys. Chem. 91, 3171 (1987)
Author Institution: University of Victoria, P.O.Box 3055 Victoria BC. Canada, V8W 3P6
Author Institution: University of Victoria, P.O.Box 3055 Victoria BC. Canada, V8W 3P6