High-statistics measurement of the beta-delayed alpha spectrum of 20Na
Abstract
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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