Analysis of the Comet-Tail (A2Πi–X2Σ+) Bands of 13C16O+

Abstract

In the electronic emission spectrum of the isotopic carbon monoxide ion 13C16O+ molecule, seven bands of the comet-tail (A2Πi–X2Σ+) system have been recorded and analyzed. The spin splitting in most observed lines of the bands 1–0, 2–0, 3–0, 4–0, 5–0, 2–1, and 7–1 comprising over 1900 lines has been recorded under high resolution by using conventional spectroscopy. The rotational analysis of bands has been performed by nonlinear least-squares procedures and by means of effective Hamiltonians of Brown et al., the rovibronic structure parameters have been obtained. As a result of multistaged and merged analysis of the currently obtained bands of the A–X system and of the bands of the B–X system obtained earlier the state of information about the energy structure has been significantly enlarged for the A state and enlarged and improved for the X state. Also RKR potential curves have been calculated for both states and Franck–Condon factors as well as r-centroids of the comet-tail system of 13C16O+.