A variety of clustering in ${}^{18}$O

Abstract

We investigate excited states of ${}^{18}$O by using the antisymmetrized molecular dynamics. It is found that five different types of cluster states exist which we call ${}^{14}\mathrm{C}+\alpha$, higher-nodal ${}^{14}\mathrm{C}+\alpha$, two molecular states, and $4\alpha$ linear-chain. The calculated $\alpha$-decay widths are compared with the observed data. The higher-nodal ${}^{14}\mathrm{C}+\alpha$ cluster states reasonably agree with resonances reported by the recent experiments. We predict that the $\alpha$-particle emission is dominant for the ${}^{14}\mathrm{C}+\alpha$ cluster states while the molecular states prefer the ${}^6$He emission.

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Cited by in corpus (4)

• Monopole and dipole transitions of the cluster states of 18O
• Low-energy dipole excitation mode in ${}^{18}$O with antisymmetrized molecular dynamics
• 4$\alpha$ linear-chain state produced by ${}^9$Be+${}^9$Be collision
• Low-energy dipole excitations in ${}^{20}$O with antisymmetrized molecular dynamics