Tuesday, March 12, 2013

1303.2617 (Z. Kohley et al.)

Study of two-neutron radioactivity in the decay of 26O    [PDF]

Z. Kohley, T. Baumann, D. Bazin, G. Christian, P. A. DeYoung, J. E. Finck, N. Frank, M. Jones, E. Lunderberg, S. Mosby, T. Nagi, J. K. Smith, J. Snyder, A. Spyrou, M. Thoennessen
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^{+1.1}_{-1.5}(stat.) +/- 3 (sys.) ps. This corresponds to 26O having a finite lifetime at an 82% confidence level and, thus, suggests the possibility of two-neutron radioactivity.
View original: http://arxiv.org/abs/1303.2617

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