Nuclear Spin-Flip Satellites in Electron Paramagnetic Resonance Spectroscopy

Under certain circumstances, the primary hyperfine electron paramagnetic resonance spectrum is accompanied by additional lines which are located at nuclear magnetic resonance spacings, almost independent of the hyperfine spin-Hamiltonian matrix A. This situation allows instant identification of the nuclide responsible. The theory behind this phenomenon is available, tractable via perturbation theory, and yields line positions and relative intensities, but is none too translucent. The present work attempts to portray the predictions of the theory using simple examples, utilizing computer-based analysis and spectral simulations.