Abstract
We study antihalo effects on reaction cross sections for scattering from a target at 83 MeV/nucleon, using the -matrix double-folding model. is described by the two-body model that reproduces the measured large -wave spectroscopic factor, i.e., the shell inversion that the orbital is lower than the orbital in energy. is described by the three-body model with the phenomenological three-body force (3BF) that explains the measured small -wave spectroscopic factor. The 3BF allows the single-particle energies of the subsystem to depend on the position of the second neutron from the center of mass of the subsystem. The orbital is lower than the orbital for large , but the shell inversion is restored for small . Antihalo effects due to the “partial shell inversion” make for smaller than that for . We also investigate projectile breakup effects on the mass-number dependence of with the continuum-discretized coupled-channel method.
- Received 11 August 2014
DOI:https://doi.org/10.1103/PhysRevC.90.041602
©2014 American Physical Society