THE FLUORESCENCE SPECTRUM OF NAPHTHALENE VAPOUR
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Date
1961
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Ohio State University
Abstract
The fluorescence spectra of naphthalene-h $s$ and napthalene-d $s$ vapour in the 3100 {\AA} region have been photographed with a high speed spectrograph having a resolution of about $0.5 cm^{-1}$. Resonance fluorescence and fluorescence with added helium have been observed. Analysis of the vibronic bands has been attempted using the criterion previously $described^{1}$ of a single maximum in the rotational contour of a band indicating long axis polarisation of the transition moment ($B_{20}$, vibronic symmetry) and a double maximum indicating short axis polarisation ($B_{1u}$ vibronic symmetry). The existence of two ground-state vibrations of frequencies $506 cm^{-1}$ ($b_{3g}$) and $516 cm^{-1}$ ($a_{g}$) in naphthalene-$h_{s}$ and $490 cm^{-1}(b_{3g}$) and $493 cm^{-1}$ ($a_{g}$) in naphthalene-$d_{g}$ will be discussed in relation to the fluorescence spectra.
Description
$^{1}$raig, D. P., Hollas, J. M., Redies, M. F. and Wait, S. C. Jr., Proc. Chem. Soc. 1959, p. 361.
Author Institution: Division of Pure Physics, National Research Council
Author Institution: Division of Pure Physics, National Research Council