Abstract
One-neutron knockout data for are analyzed in the eikonal approximation of the Glauber model. The role of the - shell and the crossing of the neutron subshell are discussed. Of particular interest is the nucleus , where the knockout data provide a sensitive experimental test for a possible halo structure of its ground state. The observation of a narrow momentum distribution of the fragments, together with an essential 1 contribution needed to describe the observed longitudinal-momentum distribution, allow the firm conclusion that the ground state of is a well-developed nuclear halo. The results also show that the subshell in is somewhat reduced as compared to that of .
- Received 8 February 2011
DOI:https://doi.org/10.1103/PhysRevC.83.064313
©2011 American Physical Society