The role of the elemental nature of A=3 nuclei in neutron-rich nuclei.

The idea of treating the trinucleon systems as elementary entities in the elementary particle model (EPM) as an Effective Field Theory has been a success in explaining the weak charge-changing processes in nuclei. The EPM results are found to be as good as those obtained from nuclear microscopic models using two-and three-body forces. We extend this concept to investigate the validity of the elemental nature of A = 3 nuclei through studies of nuclear structure of neutron-rich nuclei. By treating neutron-rich nuclei as primarily made up of tritons as its building blocks, we extract one- and two-triton separation energies of these nuclei. Calculations have been performed here within relativistic mean field (RMF) models with latest interactions. Clear evidence arises of a new shell structure with well-defined predictions of new magic nuclei. These unique predictions have been consolidated by standard one- and two-neutron separation energy calculations. The binding energy per nucleon plots of these nuclei also confirm these predictions. We make unambiguous prediction of six magic nuclei: 8 2 4 O 1 6 , 2 0 6 0 Ca 4 0 , 3 5 1 0 5 Br 7 0 , 4 1 1 2 3 Nb 8 2 , 6 3 1 8 9 Eu 1 2 6 and 9 2 2 7 6 U 1 8 4 . [ABSTRACT FROM AUTHOR]