Abstract
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 and as possible candidates for proton and neutron bubble nuclei, respectively. In the case of , we observe a significant model dependence, thereby calling into question the bubble structure of . In contrast, an overall agreement among the models is obtained for . 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 .
2 More- Received 22 September 2008
DOI:https://doi.org/10.1103/PhysRevC.79.034318
©2009 American Physical Society