Optical Zeeman spectroscopy of the (0,0) B4Γ-X4Φ band systems of titanium monohydride, TiH, and titanium monodeuteride, TiD.

The Zeeman effect in the (0,0) bands of the B(4)Γ(5/2)-X(4)Φ(3/2) system of titanium monohydride, TiH, and titanium monodeuteride, TiD, has been recorded and analyzed. Magnetic tuning of the spectral features recorded at high resolution (full width at half maximum ≅ 35 MHz) and at a field strength of 4.5 kG is accurately modeled using an effective Zeeman Hamiltonian. The determined magnetic g-factors for the X(4)Φ(3/2) (v = 0) state deviate only slightly from those expected for an isolated (4)Φ(3/2) state whereas those for the B(4)Γ(5/2)(v = 0) deviate significantly from those of an isolated (4)Γ(5/2) state. The rotational dependence of the magnetic tuning in the B(4)Γ(5/2)(v = 0) state is attributed to perturbations from a nearby (4)Φ state.