Assignment and analysis of electronic rovibrational spectrum of CS+ A2Π3/2←X2∑+

A visual mutual computer program is established for the assignment of the rovibronic spectrum of typical transition A2Π - X2∑. The usage of this program is demonstrated in the analysis of the velocity modulation spectrum of CS+ A2Π3/2(υ = 1)←X2∑+ (υ = 0). The structure parameters of CS+ are determined by a least-square fit of all assigned spectral lines on the basis of an algebraic model of the energy levels.