Chemical Physics Letters, Vol.463, No.1-3, 47-49, 2008
Vibrational satellite of Na(3d <- 3s) dipole-forbidden transition in Na/CF4 mixture
Excitation spectra of Na fluorescence in mixtures with CF4 display a new band shifted by the energy of one-vibrational quantum of the IR active nu(3)- mode of CF4 (1281 cm (1)) from Na 3d states. This band is attributed to a Na(3s)center dot center dot center dot CF4(nu(3) = 0) -> Na(3d)center dot center dot center dot CF4(nu(3) = 1) transition and its intensity is explained by coupling with Na(4p)center dot center dot center dot CF4(nu(3) = 0) resonance state which lies similar to 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. (c) 2008 Elsevier B. V. All rights reserved.