Wednesday, April 10, 2013

1304.2589 (K. L. Laursen et al.)

High-statistics measurement of the beta-delayed alpha spectrum of 20Na    [PDF]

K. L. Laursen, O. S. Kirsebom, H. O. U. Fynbo, A. Jokinen, M. Madurga, K. Riisager., A. Saastamoinen, O. Tengblad, J. Äysto
A measurement of the 20Na beta-delayed alpha spectrum with a high-granularity set-up has allowed the decay scheme to be revised on several points. Three new transitions of low intensity are found at low alpha-particle energy. An R-matrix fit of the complete spectrum gives an improved description of the decay and indicates feeding to the broad 2^+ alpha-cluster state close to 9 MeV.
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