ULTRAVIOLET ARGON ION LASER INDUCED FLUORESCENCE OF $Na_{2}^{*}$.
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Date
1981
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Ohio State University
Abstract
Sin UV lines from an argon ion laser were used to study the laser induced fluorescence of the sodium molecule. The spectra, recorded in the second order of a half-meter spectrometer (1180 grooves/nm grating), show about 200 fluorescence lines. There are four R-P series and five Q series which we assign to the C-X system of $Na_{2}$. One of these originates at a very high $vāā$ ground level $(vāā = 17)$ and shows emission almost exclusively on the blue side of the laser line. While the X state $constants^{1}$ reproduced energy levels very precisely, the C state $constants^{2}$ do not seem to do so, except for very low v^{\prime} and J^{\prime} levels. We will briefly discuss the spectra, the $C^{1}\Pi_{u}$ constants, the fluorescence intensities, and the behavior of the transition moment for the C-X system of $Na_{2}$.
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$^{*}$Supported by the National Science Foundation and the National Aeronautics and Space Administration. $^{1}$ P. Kusch and M. M. Hessel, J. Chem. Phys. 68, 2591 (1978).$^{2}$ R. F. Barrow, N. Travis and C. V. Wright, Nature 187, 141 (1960).
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