Evidence for the Ground-State Resonance of O26

E. Lunderberg, P. A. DeYoung, Z. Kohley, H. Attanayake, T. Baumann, D. Bazin, G. Christian, D. Divaratne, S. M. Grimes, A. Haagsma, J. E. Finck, N. Frank, B. Luther, S. Mosby, T. Nagi, G. F. Peaslee, A. Schiller, J. Snyder, A. Spyrou, M. J. Strongman, and M. Thoennessen
Phys. Rev. Lett. 108, 142503 – Published 6 April 2012

Abstract

Evidence for the ground state of the neutron-unbound nucleus O26 was observed for the first time in the single proton-knockout reaction from a 82MeV/u F27 beam. Neutrons were measured in coincidence with O24 fragments. O26 was determined to be unbound by 150150+50keV 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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  • Received 23 October 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.142503

© 2012 American Physical Society

Authors & Affiliations

E. Lunderberg1, P. A. DeYoung1, Z. Kohley2, H. Attanayake3, T. Baumann2, D. Bazin2, G. Christian2,4, D. Divaratne3, S. M. Grimes3, A. Haagsma5, J. E. Finck5, N. Frank6, B. Luther7, S. Mosby2,4, T. Nagi1, G. F. Peaslee1, A. Schiller3, J. Snyder2,4, A. Spyrou2,4, M. J. Strongman2,4, and M. Thoennessen2,4,*

  • 1Department of Physics, Hope College, Holland, Michigan 49423, USA
  • 2National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
  • 3Department of Physics & Astronomy, Ohio University, Athens, Ohio 45701, USA
  • 4Department of Physics & Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
  • 5Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, USA
  • 6Department of Physics & Astronomy, Augustana College, Rock Island, Illinois 61201, USA
  • 7Department of Physics, Concordia College, Moorhead, Minnesota 56562, USA

  • *thoennessen@nscl.msu.edu

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Vol. 108, Iss. 14 — 6 April 2012

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