Evolution of single-particle structure of silicon isotopes

摘要: New data on proton and neutron single-particle energies $E_{nlj}$ of Si isotopes with number $N$ from 12 to 28 as well occupation probabilities $N_{nlj}$ single particle states stable $^{28,30}$Si near the Fermi energy were obtained by joint evaluation stripping pick-up reaction excited state decay schemes neighboring nuclei. The evaluated indicate following features structure evolution: persistence $Z = 14$ subshell closure increase, new magicity $N 16$, conservation magic properties 20$ in isotopic chain. described dispersive optical model. calculation also predicts weakening 28$ shell demonstrates evolution bubble-like density distributions neutron-rich isotopes.