MOLECULAR-BEAM OPTICAL STARK SPECTROSCOPY OF MON

A high resolution optical spectroscopic study of a molybdenum mononitride, MoN, supersonic molecular beam sample has been performed. The R(ee) (0.5) branch feature of the (0,0) A 4PI3/2-X 4SIGMA1/2- band system for (MoN)-Mo-98 was recorded as a function of static electric field strengths of up to 3.5 kV/cm. The splittings and shifts were analyzed to produce values of the permanent electric dipole moment of 4.56(9) and 3.38(7)D for the A 4PI3/2 and X 4SIGMA1/2- states, respectively. The field free splittings for the (MoN)-Mo-95 and (MoN)-Mo-97 isotopic forms were interpreted as arising from X 4SIGMA1/2- magnetic hyperfine effects and the resulting spin density of 5.09(8) a.u.-3 was determined. Comparisons with predictions from theoretical models are given.