Hyperfine structure and Zeeman tuning of the A 2Π-X 2Σ+(0,0) band system of the odd isotopologue of strontium monofluoride 87SrF

The low-rotational lines of the A 2Π-X 2Σ+(0,0) band system of the odd isotopologue of strontium monofluoride, 87SrF, were recorded and analyzed. The 87Sr(I=9/2) magnetic hyperfine interaction is significant only in the |Ω|=1/2 spin-orbit component of the A 2Π state. Optical transitions appropriate for monitoring ultracold samples of 87SrF are identified. The determined fine-structure parameters were used to predict the anisotropic magnetic g factor, gl, for the X 2Σ+(v=0) state. The g factors were used to predict the magnetic tuning of the N=0 (+parity) and N=1 (-parity) levels of the X 2Σ+(v=0) state. A comparison to spectroscopic parameters for the 88SrF isotopologue is given.