Abstract
The one-neutron removal cross sections of neutron-rich Al isotopes and longitudinal momentum distributions of the residues have been measured for to 36 at relativistic energies (900 MeV/u). The inclusive data have been interpreted within the eikonal approximation. The evolution of the single-particle occupancy in the ground state of Al has been studied and compared with shell model predictions. The inferred neutron occupancy in the Al ground-state wave function is 20% to 40% lower than the predicted one. The inclusive data do not exclude the presence of intruder states. Some intruder occupancy is found in Al, similarly to Mg. The single-particle occupancy shows a gradual increase at . Correspondingly, a decrease of the strength has been observed.
2 More- Received 4 October 2011
DOI:https://doi.org/10.1103/PhysRevC.85.044312
©2012 American Physical Society