Study of Two-Neutron Radioactivity in the Decay of O26

Z. Kohley, T. Baumann, D. Bazin, G. Christian, P. A. DeYoung, J. E. Finck, N. Frank, M. Jones, E. Lunderberg, B. Luther, S. Mosby, T. Nagi, J. K. Smith, J. Snyder, A. Spyrou, and M. Thoennessen
Phys. Rev. Lett. 110, 152501 – Published 8 April 2013


A new technique was developed to measure the lifetimes of neutron unbound nuclei in the picosecond range. The decay of O26O24+n+n was examined as it had been predicted to have an appreciable lifetime due to the unique structure of the neutron-rich oxygen isotopes. The half-life of O26 was extracted as 4.51.5+1.1(stat)±3(syst)ps. This corresponds to O26 having a finite lifetime at an 82% confidence level and, thus, suggests the possibility of two-neutron radioactivity.

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  • Received 10 December 2012


© 2013 American Physical Society

Authors & Affiliations

Z. Kohley1,2,*, T. Baumann1, D. Bazin1, G. Christian1,3, P. A. DeYoung4, J. E. Finck5, N. Frank6, M. Jones1,3, E. Lunderberg4, B. Luther7, S. Mosby1,3, T. Nagi4, J. K. Smith1,3, J. Snyder1,3, A. Spyrou1,3, and M. Thoennessen1,3

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

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Vol. 110, Iss. 15 — 12 April 2013

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