= Hyperfine structure
{wiki=Hyperfine_structure}
Hyperfine structure refers to small splittings in the energy levels of atoms that arise from interactions between the magnetic moments of the nucleus and the electrons surrounding it. This phenomenon occurs due to the coupling of the nuclear spin with the magnetic field generated by the electron cloud. In more detail, the nucleus of an atom has a property called nuclear spin, which can take on certain discrete values depending on the number of protons and neutrons in the nucleus.
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