Shell overcomes repulsive nuclear force instability

The infinite nuclear matter mass model and the relativistic mean field theory show a strong evidence of new neutron magic numbers 100, 150, 164; proton magic number 78 and new islands of stability around N = 100, Z ≅ 62; N = 150, Z = 78 and N = 164, Z ≅ 90 in the drip-line regions of nuclear chart. It is shown that the shell effect stabilizes the instability due to the repulsive component of the nuclear force giving rise to a new phenomenon, complementary to the phenomena of fission isomer and superheavy elements where repulsive Coulomb instability is overcome by the same. This will result in the broadening of the stability peninsula