Hyperfine Structure of Zeeman Levels in Nitric Oxide

This paper contains a calculation of the energy arising from the magnetic interaction of the extranuclear electrons with the magnetic moment of the nitrogen nucleus in N¹⁴{O}¹⁶$. An operator is derived for the interaction, which is more fundamental than the one, proportional to I·{}J, which is commonly used. This operator is employed, together with previously calculated state functions, to compute the hyperfine structure of the ²Π3/2 state of N¹⁴{O}¹⁶$. The formula which results from this procedure accounts for the experimental data, which cannot be explained completely if the interaction operator is taken to be proportional to I·{}J.