The linear-chain (LC) structure provides significant insights into quantum many-body systems with geometric configurations. In this study, $4\alpha +2n$ LC was assessed in ${}^{18}\mathrm{O}$. The excitation energies, moment of inertia, and $\alpha$- and ${}^9\mathrm{Be}$-decay widths of the LC states were predicted using antisymmetrized molecular dynamics. We predict that there are two $4\alpha$ LC bands, $K^{\pi }=0^{+}$ and $K^{\pi }=3^{-}$, which exhibit different decay properties. We demonstrate that the $K^{\pi }=3^{-}$ LC states can be verified by the head-on ${}^9\mathrm{Be}+{}^9\mathrm{Be}$ collision experiments because their states exhibited large decay widths in the ${}^9\mathrm{Be}+{}^9\mathrm{Be}$ channel.

Close

PrevNext

View figure in article

• Lifetimes & widths
• Nuclear structure & decays
• Nucleon distribution
• Unstable nuclei induced nuclear reactions
• 6 ≤ A ≤ 19