Evidence for the Ground-State Resonance of O-26

Document Type

Article

Publication Date

4-6-2012

Publication Source

Physical Review Letters

Volume Number

108

Issue Number

14

Publisher

American Physical Society

ISSN

0031-9007

Abstract

Evidence for the ground state of the neutron-unbound nucleus O-26 was observed for the first time in the single proton-knockout reaction from a 82 MeV/u F-27 beam. Neutrons were measured in coincidence with O-24 fragments. O-26 was determined to be unbound by 150(-150)(+50) keV from the observation of low-energy neutrons. This result agrees with recent shell-model calculations based on microscopic two- and three-nucleon forces.

Keywords

Neutron-rich nuclei, Particle Stability, Sweeper magnet, Isotopes, Fragmentation, Search, CA-48

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