engleski

Nuclear “ bubble” structure in 34Si

Bubble nuclei are characterized by a depletion of their central density. Their existence is examined within three different theoretical frameworks: the shell model and nonrelativistic and relativistic microscopic mean-field approaches. We analyze 34Si and 22O as possible candidates for proton and neutron bubble nuclei, respectively. In the case of 22O, we observe a significant model dependence, thereby calling into question the bubble structure of 22O. In contrast, an overall agreement among the models is obtained for 34Si. Indeed, all models predict a central proton density depletion of about 40% and a central charge density depletion of 25%– 30%. This result provides strong evidence in favor of a proton bubble in 34Si.

21.10.Ft; 21.60.-n; 25.30.Bf; 27.30.+t

nije evidentirano