Three-body decay of linear-chain states in ${}^{14}$C

Abstract

The decay properties of the linear-chain states in ${}^{14}$C are investigated by using the antisymmetrized molecular dynamics. The calculation predicts two rotational bands with linear-chain configurations having the $\pi$-bond and $\sigma$-bond valence neutrons. For the $\pi$-bond linear-chain, the calculated excitation energies and the widths of $\alpha$-decay to the ground state of ${}^{10}\mathrm{Be}$ reasonably agree with the experimental candidates observed by the $\alpha +{}^{10}\mathrm{Be}$ resonant scattering. On the other hand, the $\sigma$-bond linear-chain is the candidate of the higher-lying resonant states reported by the break-up reaction. As the evidence of the $\sigma$-bond linear-chain, we discuss its decay pattern. It is found that the $\sigma$-bond linear-chain not only decays to the excited band of ${}^{10}\mathrm{Be}$ but also decays to the three-body channel of ${}^6\mathrm{He}+\alpha +\alpha$, and the branching ratio of these decays are comparable. Hence, we suggest that this characteristic decay pattern is a strong signature of the linear-chain formation and a key observable to distinguish two different linear-chains.

References in corpus (10)

• Rod-shaped Nuclei at Extreme Spin and Isospin
• Cluster structures of excited states in ${}^{14}$C
• Antisymmetrized molecular dynamics studies for exotic clustering phenomena in neutron-rich nuclei
• Experimental investigation of a linear-chain structure in the nucleus 14C
• Selective decay from a candidate of the $\sigma$-bond linear-chain state in ${}^{14}$C
• Structure and decay pattern of linear-chain state in 14C
• 3alpha clustering in the excited states of 16C
• Approximation of reduced width amplitude and application to cluster decay width
• Monopole excitation of the Hoyle state and linear-chain state in 12C
• Cluster Decay of the High-lying excited states in ${}^{14}$C

Cited by in corpus (11)

• Stability of the linear chain structure for ${}^{12}$C in covariant density functional theory on a 3D lattice
• Real-time evolution method and its application to 3$\alpha$ cluster system
• Characteristic αand ^{6}He decays of the linear-chains in ^{16}C
• Cluster structures and monopole transitions of ${}^{14}$C
• Investigation of the near-threshold cluster resonance in ${}^{14}\mathrm{C}$
• Shape of 13C studied by the real-time evolution method
• A variety of clustering in ${}^{18}$O
• Monopole and dipole transitions of the cluster states of 18O
• On deformability of atoms---comparative study between atoms and atomic nuclei
• The lowest excited states of 14C and 14O nuclei within a five-cluster model
• 4$\alpha$ linear-chain state produced by ${}^9$Be+${}^9$Be collision