Semiclassical Theory of the Effects of Internal Motions on the Linewidths in Electron Spin Resonance Spectra

摘要: A number of classical dynamical models are developed for describing the effects internal rotational motions and solvent‐complex formation on ESR hyperfine linewidths free radicals in solution. These processes can lead to linewidth because they cause time‐dependent modulations isotropic interactions different magnetic nuclei. An alternating effect, which has been observed a recent studies, is predicted result when there an out‐of‐phase correlation between splittings ai(t) equivalent By nuclei here meant those time‐average 〈ai(t) 〉Av equal, one increase instantaneous splitting from Nucleus i, ai(t), correlated with decrease aj(t) nucleus j. This coupling mechanical rotating groups also that...