The P-branch spectral lines of high-lying rotational quantum states of (2, 1), (1, 1) bands in [12.8] (2)Φ(7/2)-a(2)Φ(7/2) electronic transition of TiCl are obtained in this work by using an analytical formula proposed recently by Sun et al. The formula has generated 31 unknown P-branch emission spectral lines up to J=80.5 those may not be available experimentally for these bands of TiCl molecule.
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