Electron-positron pair production

   The pair production is one of the most interesting demonstrations for the presence of space matter in atoms. When a gamma ray photon with an energy of 1.022 MeV or more, is passed through near a heavy atomic nucleus (i.e., through the innermost transitory shell), it can result the production of one electron and one positron. The space matter density in these regions is sufficient for the production of electron - positron pair, when energetic gamma rays passes through them. Because of the high-density, the quantity of space matter in these regions is equal to or more than the mass of the pair. When such an energetic gamma ray photon is passed through them, the individual space matter units in the region will be bonded together to produce the pair. When a pair production occurs, the equal amount of space matter (with the mass of the pair) will be entered from outside of the atom and the densities of the space matter in the atomic shells will be always maintained.