Abstract
Excitation spectra of Na fluorescence in mixtures with CF 4 display a new band shifted by the energy of one-vibrational quantum of the IR active ν 3-mode of CF 4 (1281 cm −1) from Na 3d states. This band is attributed to a Na(3s)⋯CF 4( ν 3 = 0) → Na(3d)⋯CF 4( ν 3 = 1) transition and its intensity is explained by coupling with Na(4p)⋯CF 4( v 3 = 0) resonance state which lies ∼ 180 cm −1 below in energy. An analogous satellite of the Na 6p state combined with the same vibration and lying close to the Na 7p state is reported and discussed.
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