Interference of resonances in two-proton emission of ${}^{16}$Ne

Abstract

We investigate the two-proton ($2p$) emission from ${}^{16}$Ne with the time-dependent ${}^{14}$O$+p+p$ three-body calculations. Two $0^{+}$ resonances are suggested to participate. For the $0_1^{+}$ resonance, the true emission of the spatially localized two protons is dominant, if the single-particle $s_{1/2}$ resonance locates above the $2p$ energy. By evaluating a time-evolution probability, the $0_2^{+}$ resonance is suggested at $\cong 3$ MeV from the $2p$ threshold. The inclusion of $0_2^{+}$ resonance makes the true-$2p$~emission more dominant in the time-dependent calculations.

Comments: 11 pages, 13 figures, 5 tables, revised for resubmitting