title: Study of two-neutron radioactivity in the decay of 26O.
abstract: A new technique was developed to measure the lifetimes of neutron unbound nuclei in the picosecond range. The decay of 26O→24O+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 26O was extracted as 4.5(-1.5)(+1.1)(stat)±3(syst)  ps. This corresponds to 26O having a finite lifetime at an 82% confidence level and, thus, suggests the possibility of two-neutron radioactivity.
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: Z
authors.initials: Z
authors.lastname: Kohley
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: T
authors.initials: T
authors.lastname: Baumann
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: D
authors.initials: D
authors.lastname: Bazin
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: G
authors.initials: G
authors.lastname: Christian
authors.affiliation: Department of Physics, Hope College, Holland, Michigan 49423, USA.
authors.forename: P A
authors.initials: PA
authors.lastname: DeYoung
authors.affiliation: Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA.
authors.forename: J E
authors.initials: JE
authors.lastname: Finck
authors.affiliation: Department of Physics and Astronomy, Augustana College, Rock Island, Illinois 61201, USA.
authors.forename: N
authors.initials: N
authors.lastname: Frank
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: M
authors.initials: M
authors.lastname: Jones
authors.affiliation: Department of Physics, Hope College, Holland, Michigan 49423, USA.
authors.forename: E
authors.initials: E
authors.lastname: Lunderberg
authors.affiliation: Department of Physics, Concordia College, Moorhead, Minnesota 56562, USA.
authors.forename: B
authors.initials: B
authors.lastname: Luther
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: S
authors.initials: S
authors.lastname: Mosby
authors.affiliation: Department of Physics, Hope College, Holland, Michigan 49423, USA.
authors.forename: T
authors.initials: T
authors.lastname: Nagi
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: J K
authors.initials: JK
authors.lastname: Smith
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: J
authors.initials: J
authors.lastname: Snyder
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: A
authors.initials: A
authors.lastname: Spyrou
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: M
authors.initials: M
authors.lastname: Thoennessen