Introduction of core-shell model
In nuclear physics and nuclear chemistry, the core-shell model is a model that uses the structure of the Pauli incompatibility to describe the energy levels of atomic nuclei. The nuclear shell model was independently proposed by Mrs. M.G. Mayer and J.H.D. Jensen in 1949. Because of the discovery of the core-shell model theory and the principle of symmetry, the Nobel Prize in Physics was awarded in 1963.
The core-shell model part is similar to the electron shell of the atom to describe the arrangement of electrons in the atom. It is particularly stable when the shell is filled. The core-shell model describes the arrangement of subatomic particles in the atom. When protons and neutrons are filled The nuclide is more stable when filled with a certain core shell.