Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5429507 | Journal of Quantitative Spectroscopy and Radiative Transfer | 2011 | 5 Pages |
The ro-vibrational spectrum of the weak (4, 6) hot band in the comet-tail (A2Πi-X2Σ+) system of CO+ is observed by employing optical heterodyne and magnetic rotation enhanced velocity modulation spectroscopy. One hundred and twenty-four spectral lines are assigned to this band; thus, precise molecular constants of the levels involved are obtained from a weighted nonlinear least-squares fitting procedure combining with our previous spectrum of the (3, 6) band.
Research highlights⺠About 1/60 weak band (4, 6) in the comet-tail (A2Πi-X2Σ+) system of CO+ is directly observed. ⺠124 spectral lines are assigned to the (4, 6) band. ⺠Precise molecular constants of the levels involved are obtained. ⺠The improvement of the molecular constants is up to one order.