Theory of the Effects of Exchange on the Nuclear Fine Structure in the Paramagnetic Resonance Spectra of Liquids

摘要: A theory of the influence exchange forces in liquids upon nuclear hyperfine structure paramagnetic ``spin resonance'' spectra is presented. Formulas are derived for two limiting cases: J much larger than separation A, and A≪J. It found that as increases lines broaden (exchange broadening) start to shift towards ``unsplit'' Zeeman frequency. For J≈A, have coalesced into a single broad line J>A narrows narrowing) about These calculations discussed considerable detail. The effect spectrum electronic‐electronic electronic‐nuclear dipolar interactions rapid molecular motions also been considered, well their with forces.