VISIBLE LASER SPECTROSCOPIC STUDIES OF FeH

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1990

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Ohio State University

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Laser induced fluorescence(LIF), resolved LIF, and resolved chemiluminescence studies of the blue/green bands of non ironhydride. Fell, have been performed. Approximately 50\% of the lines observed in the King furnace emissions $spectrum^{1}$ were identified in the LIF spectra for the region covered ($18600 cm^{-1} -19125 cm^{-1})$. Preliminary dispersed fluprescence result on a number of the strong LIF features gives irregular PQR intensities and an initial estimate of $B= 5.5$ cm and $\Delta G_{1/2} = 1630 cm$ for the lowest state associated with these transitions. These values indicate that the lower state is not the $X^{4}\Delta$ state. An attempt to record the intermodulated fluorescence spectrum of this band system is being made and the preliminary results will be given.

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$^{1}$ P. McCormack and S. O'Connor. Ashon1 Astrphys. Suppl. 26.373 (1976).
Author Institution: Physical Chemistry Laboratory, Oxford University; Department of Chemistry, Arizona State University

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