The first negative (B2Σ+→X2Σ+) system of CO+:: excitation of higher vibrational levels

Six bands of the B(2)Sigma(+) --> X(2)Sigma(+) system in the (CO+)-C-12-O-16 molecule were photographed by conventional spectroscopic techniques under high resolution. The 4-7 band was reinvestigated and the 4-6, 4-8, 5-8, 5-9, and 6-10 bands were recorded and analysed for the first time. The rovibronic structure parameters of the individual bands were obtained from their wavenumber data via a nonlinear least-squares procedure fit. The effective Hamiltonians of Brown with direct matrix elements given by Amiot et al. [J. Mol. Spectrosc. 87 (1981) 196] have been used. By means of a merge calculations molecular constants B-upsilon, D-upsilon, and gamma(upsilon) for B(2)Sigma(+) (upsilon = 4-6) and for the X(2)Sigma(+) (upsilon = 6-10) states and six bands origins v(upsilon'-upsilon") of all the six analysed bands were computed for the B --> X system. (C) 2003 Elsevier Inc. All rights reserved.