- Electronic transition moment of the A2∏r-X2∑+ system of TiN
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The A2∏r-X2∑+ transition of TiN was observed by the dispersed laser induced fluorescence (DLIF) spectroscopy. The relative intensities of the DLIF spectra were analyzed to determine the dependence of the electronic transition moment, Re(r), on the internuclear distance, r, as Re(r) ∝ {1 - 0.281(26)r} (1.380 ? ≤ r ≤ 1.823 ?). This r-dependence was analyzed simultaneously with the reported values of the spin-orbit constants for A2∏r and the hyperfine-coupling constants for X2∑+ to evaluate the ionic character of the Ti≡N bond, the 4s atomic character in the 9σ orbital of X2∑+, and the 4p atomic character in the 4π orbital of A2∏r. These characters were confirmed to be in accordance with the reported theoretical prediction. A strong r-dependence was indicated for the 3d-4p mixing in the A2∏r state due to the configuration mixing of the Ti(3d4) and Ti(3d34p) states at a large internuclear distance.
- Ito, Haruhiko,Namiki, Kei-Ichi C.,Tojo, Tsutomu,Miyamoto, Yohji,Ohtaka, Masami
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