Evidence for the ground-state resonance of 26O
arXiv:1202.3973 · doi:10.1103/PhysRevLett.108.142503
Abstract
Evidence for the ground state of the neutron-unbound nucleus 26O was observed for the first time in the single proton-knockout reaction from a 82 MeV/u 27F beam. Neutrons were measured in coincidence with 24O fragments. 26O was determined to be unbound by 150+50-150 keV from the observation of low-energy neutrons. This result agrees with recent shell model calculations based on microscopic two- and three-nucleon forces.
Accepted for Publication in Phys. Rev. Lett