Abstract
We have surveyed the neutron separation energies and the interaction cross sections for the neutron-rich and the shell region. Very recently, both measurements reached up to the neutron drip line, or close to the drip line, for nuclei of . A neutron-number dependence of shows clear breaks at near the neutron drip line , which shows the creation of a new magic number. A neutron-number dependence of shows a large increase of for , which supports the new magic number. The origin of the new magic number is also discussed.
- Received 15 February 2000
DOI:https://doi.org/10.1103/PhysRevLett.84.5493
©2000 American Physical Society