A study of vibronic coupling in neutral and ionic states of carbon disulphide

作者：Shaw D A^*; Holland D M P

来源：Journal of Physics B: Atomic, Molecular and Optical Physics , 2007, 40(24): 4637-4649.

DOI：10.1088/0953-4075/40/24/008

Dispersed fluorescence spectroscopy has been employed to study vibronic coupling in neutral and ionic states of carbon disulphide. The vibrationally resolved excitation spectra of the CS2+ (B) over tilde (0 0 1) (2) Sigma(+)(g) -> (N) over tilde (0 0 1) (2) Pi(u), (B) over tilde (0 0 2) (2) Sigma(+)(u) -> (X) over tilde (0 0 2) (2) Pi(g), (B) over tilde (1 0 0) (2) Sigma(+)(u) -> (X) over tilde (0 0 0) (2) Pi(g) and (B) over tilde (0 0 0) (2) Sigma(+)(u) -> (X) over tilde (0 0 0) (2) Pi(g) transitions have revealed new structure and possible assignments are discussed. Autoionization from vibrationally unexcited Rydberg states belonging to series converging onto the (C) over tilde (2) Sigma(+)(g) limit appears to result in the formation of vibrationally excited (B) over tilde (2) Sigma(+)(u) state ions, including those with one or two quanta of the antisymmetric stretching mode. Most of the bands in the CS2+ (B) over tilde (2) Sigma(+)(u) -> (X) over tilde (2) Pi(g) dispersed fluorescence spectrum have been assigned using energy levels determined in photoelectron spectroscopic studies. The four subbands associated with the Renner-Teller split (B) over tilde (0 1 0) (2) Pi(g) -> (X) over tilde (0 1 0) (2) Sigma(+)(u) vibronic transition have been identified.

• 出版日期2007-12-28