科研之友
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摘要
Based on a microscopic cluster model that reproduces well the C-17 spectrum below the neutron threshold, we study the spectrum of its mirror nucleus Na-17. We find that the Na-17 ground state should be located at 2.4 MeV above the Ne-16(0(1)(+)) + p threshold, being a broad 1/2(+) resonance with a width of 1.4 MeV. However, there should exist at least four narrow excited states in Na-17; three of them, 3/2(1)(+), 7/2(1)(+), and 9/2(1)(+), decay into the Ne-16(2(1)(+)) + p channel, and the other, 5/2(1)(+), decays mainly into the Ne-16(0(1)(+)) + p channel. Because the daughter nucleus Ne-16 is a two-proton emitter, the narrow Na-17 states must undergo a sequential three-proton decay via intermediate states in Ne-16.
- 出版日期2010-5
