COLLISIONALLY-EXCITED NAPHTHALENE IN THE GAS PHASE
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Date
1989
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Ohio State University
Abstract
The spectroscopic properties of aromatic hydrocarbons in static gases and molecular beams have been examined to great extent. Laser excitation methods have been employed in these studies more frequently than collisional excitation methods. The latter methods are important as they provide a handle on molecular electronic states with spin multiplicity different from that of the ground state. Excited triplet nitrogen molecules are present in the afterglow of a corona discharge expansion of nitrogen and helium. Naphthalene can be introduced to this mixture downstream from the discharge. Collisions involving triplet nitrogen lead to electronic excitation of naphthalene. We present high resolution emission spectra which provide insight regarding the state distribution of collisionally excited naphthalene.
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Author Institution: Department of Chemistry, Loyola University of Chicago