Abstract
The ground state and first excited state of were measured by the method of elastic resonance scattering in inverse kinematics. A secondary beam of 115 MeV/nucleon was slowed down to 8 MeV/nucleon and energy bunched before stopping in a target. The excitation energy spectrum was extracted from elastically scattered protons at The ground state resonance of was determined to be unbound with respect to single-proton emission by corresponding to a mass excess of The first excited state resonance is unbound by leading to an excitation energy of A comparison with systematics of single-nucleon separation energies and theoretical models suggests that should be unbound by about
- Received 9 June 2003
DOI:https://doi.org/10.1103/PhysRevC.68.034607
©2003 American Physical Society