Lunderberg E, DeYoung PA, Kohley Z, Attanayake H, Baumann T, Bazin D, Christian G, Divaratne D, Grimes SM, Haagsma A, Finck JE, Frank N, Luther B, Mosby S, Nagi T, Peaslee GF, Schiller A, Snyder J, Spyrou A, Strongman MJ, Thoennessen M. Evidence for the ground-state resonance of 26O.
PHYSICAL REVIEW LETTERS 2012;
108:142503. [PMID:
22540789 DOI:
10.1103/physrevlett.108.142503]
[Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2011] [Indexed: 05/31/2023]
Abstract
Evidence for the ground state of the neutron-unbound nucleus (26)O was observed for the first time in the single proton-knockout reaction from a 82 MeV/u (27)F beam. Neutrons were measured in coincidence with (24)O fragments. (26)O 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.
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