Disappearance of neutron magic numbers at drip-line

Experimental and theoretical studies of exotic nuclei with extreme isospin values present one of the most active areas of research in nuclear physics . Experiments with radioactive nuclear beams provide the opportunity to study very short-lived nuclei with very large neutron to proton ratios N/Z. Recent experiments with radioactive nuclear beams (RNB) have provided, apart from many other interesting results, strong indications for the disappearance of traditional magic numbers as well as appearance of new magic numbers in nuclei with exotic isospin values