Theory of Magnetic Resonance in Nitric Oxide

The paper presents a theoretical study of the effect of a magnetic field on the lowest of the ${}_{}{}^2{}_{}{}^{}\Pi _{\frac{3}{2}}^{}{}_{}{}^{}$ levels of ${\mathrm{N}}^{14}$ ${\mathrm{O}}^{16}$. The molecular Zeeman effect is calculated in detail and found to yield good agreement with experiment. Consideration is given to the energy of interaction, (a), of the spin of the ${\mathrm{N}}^{14}$ nucleus with the total electronic angular momentum in the external field, and (b) of the quadrupole moment of ${\mathrm{N}}^{14}$ with the electric field at the ${\mathrm{N}}^{14}$ nucleus. The last section contains an evaluation of the matrix elements needed in the computation of absolute intensities for the transitions within the ${}_{}{}^2{}_{}{}^{}\Pi _{\frac{3}{2}}^{}{}_{}{}^{}$ level.