The comet-tail (A-X) system of CO(+) - Precise molecular constants of its 2Sigma(+), A 2 Pii, and B 2Sigma(+) states

New spectroscopic studies of the Comet–Tail (A2Πi–X2Σ+) system of the CO+ molecule

“…In 1988, Vujisić and Pe sić [14] reanalyzed rotational structure of the 4-0, 3-0, and 0-2 bands. In 1992, Haridass et al [15] recorded 17 bands with v 0 = 0-8 and v 00 = 0-4 under medium resolution. Twelve of them (five with v 0 = 6, 4, 3, 2, 1 and common v 00 = 0; four with common v 0 = 0 and v 00 = 1, 2, 3, 4 and the bands 2-1, 1-1, 2-3) were photographed under higher resolution and then analyzed.…”

“…The 6-0, 1-0, 2-1, 1-1, 0-1, and 2-3 bands were investigated for the first time since Rao published his work [6]. These authors [15] merged the constants and band origins obtained by them from band by band fits, the results of B-X [16,17] and B-A [18] systems and the microwave [19,20] and infrared [21] data. As a result, they received a unique set of molecular constants for the X, A, and B states.…”

“…In 2001, Zhuang et al [23] recorded the 1-2 and 2-3 bands by means of the optical heterodyne magnetic rotation enhanced velocity modulation spectroscopy method. While the 1-2 band was analyzed on regular basis, the 2-3 band was reinvestigated after the previous analysis by Haridass et al [15].…”

“…The v = 6 level has been lately analyzed by Haridass et al [15] while analyzing the 6-0 band. Unfortunately, Table 1 Observed wavenumbers (in cm À1 ) and rotational assignments for the 6-0 band of the Comet-Tail (A 2 P i -X 2 R + ) system in the 12 (7) The the recording of incomplete band structure limited to lines with J max = 16.5 and lack of splitting of the spin structure in all band branches did not allow the obtained constants to be extrapolated to higher J values.…”

Analysis of the Comet-Tail (A2Π –X2Σ+) Bands of 13C16O+

“…The bibliography and tabulations of the spectroscopic information dealing with the four electronic states, X 2 + , A The comet-tail system, being one of the most comprehensive band systems of this molecule, has been explored the most extensively in the most abundant isotopomer 12 C 16 O + (1,(4)(5)(6)(7)(8)(9)(10)(11). There have been fewer works, which were concerned with a smaller number of bands, devoted to the study of this system in the other isotopomers of CO + .…”