Phys.Rev. C 105, 014314 (2022)

R.J.Charity, L.G.Sobotka, T.B.Webb, K.W.Brown

Two-proton decay from α-cluster states in ¹⁰C and ¹¹N

NUCLEAR STRUCTURE ¹⁰C, ¹¹N; analyzed 2p+2α for ¹⁰C and 3p+2α exit channels for two-proton decay and highly fragmented decay channels using invariant-mass data from four previous experiments at NSCL-MSU, and Texas A and M facility involving inelastic scattering, multinucleon knockout, and neutron-pickup reactions; deduced a number of democratic 2p emitters associated with α-cluster structure, Correlation plots for the two-proton decay of the second 3/2- state in ¹¹N and second 0+ state in ¹⁰C. ¹⁰C; deduced levels, J, π, α-cluster states, rotational band built on the second 0+ (Hoyle) state with α-cluster molecular structure, prompt 2p decay from excited states, decay channels and their branching ratios, compared with level structure of mirror nucleus ¹⁰Be. ¹¹N; deduced levels, J, π, Γ, molecular band built on the second 3/2- state, decaying by 2p-channel, compared with level structure of mirror nucleus ¹¹Be. Discussed possible 2n-decay of neutron-rich cluster configurations.

doi: 10.1103/PhysRevC.105.014314