HOMOGENEOUS PERTURBATION BETWEEN THE $o^{1}\Pi_{u}$ STATE AND THE $b^{1}\Pi_{u}$ STATE OF THE NITROGEN MOLECULE
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Date
1973
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Ohio State University
Abstract
Rotational analysis of the $o ^{1}\Pi_{u} \leftarrow X ^{1}\Sigma_{g}^{+}$ bands of nitrogen in the vacuum ultraviolet reveals evidence for an interaction between the o-state and the $b ^{1}\Pi_{u}$ state. Although this interaction is weaker than analogous interactions involving other Rydberg states such as $c ^{1}\Pi_{u}$ or $c^{\prime} ^{1}\Sigma_{u}^{+} ^{1}$, a deperturbation procedure is necessary for an accurate evaluation of the molecular constants. Application of the deperturbation technique of $Kovacs^{2}$ yields the following molecular constants for the o-state: $$\omega_{e} =1987.4 cm^{-1}, \omega_{e} x_{e} = 16.3 cm^{-1}, B_{e} = 1.733_{9} cm^{-1}, and \alpha =0.088 cm^{-1}.$$
Description
$^{1}$ P. K. Carroll and C. P. Collins, Can. J. Phys., 47, 653 (1969). $^{2}$ I. Kovacs, Rotational Structure in the Spectra of Diatomic Molecules, American Elsevier Publishing Co., New York, 1969.
Author Institution: Air Force Cambridge Research Laboratories
Author Institution: Air Force Cambridge Research Laboratories