Abstract
Excited states in have been established by detecting rays coincident with inelastic scattering and nucleon removal reactions on a liquid hydrogen target. The low excitation energy, 986(5) keV, of the state provides evidence of a weakening in the shell closure in a neutron-rich nucleus devoid of deformation-driving proton collectivity.
- Received 19 June 2006
DOI:https://doi.org/10.1103/PhysRevLett.97.112501
©2006 American Physical Society