The TiOc1Φ–a1Δ (0–0) Band at Sub-Doppler Spectral Resolution: Spin–Orbit Interactions in thecState
✍ Scribed by C. Amiot; M. Cheikh; P. Luc; R. Vetter
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 259 KB
- Volume
- 179
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
The c 1 F-a 1 D (0-0) band of titanium monoxide has been studied at sub-Doppler resolution by crossing a beam of TiO molecules with a cw tunable laser beam and collecting the laser-induced fluorescence. The rotational structures of the P, Q, and R branches have been observed up to rotational quantum numbers equal to 52, 94, and 96, respectively. The spectroscopic data have been reduced to a set of 11 effective molecular constants with a root mean squared values of the residuals equal to 7 1 10 04 cm 01 . However, the necessity of including seventh order terms in the rotational development of the energy put into evidence a very strong spin-orbit interaction between the c 1 F (£ Å 0) and C 3 D 3 (£ Å 2 and £ Å 3) levels. The derived spin-orbit parameter allows for the reproduction of the measured wavenumbers without the introduction of higher order rotational terms into the energy development. The value of the spin-orbit parameter indicates the necessity of revisiting the configuration scheme of the involved electronic states.