Nuclear Spin, Hyperfine Structure
The atomic nucleus generates the central field in which the electrons of the atom move. The nuclear charge number (atomic number) therefore appears in all the equations for spectral energy terms of atoms. In addition, there are other influences of the nucleus on the electronic spectra, the measurement of which generally requires an especially high spectral resolution. Therefore, one refers to a hyperfine structure of the spectral lines. By contrast, the effects of the interactions of the electrons among themselves as well as those of electronic spins with the orbital moments, which we have treated in the preceding chapters, are referred to as fine structure.
KeywordsNuclear Magnetic Resonance Angular Momentum Electron Spin Resonance Atomic Nucleus Electron Spin Resonance Spectrum
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