Candidates for the 5$\alpha$ condensed state in ${}^{20}$Ne

Abstract

We conducted the coincidence measurement of $\alpha$ particles inelastically scattered from ${}^{20}$Ne at $0^{\circ }$ and decay charged particles in order to search for the alpha-particle condensed state. We compared the measured excitation-energy spectrum and decay branching ratio with the statistical-decay-model calculations, and found that the newly observed states at $E_x$ = 23.6, 21.8, and 21.2 MeV in ${}^{20}$Ne are strongly coupled to a candidate for the 4$\alpha$ condensed state in ${}^{16}$O. This result presents the first strong evidence that these states are the candidates for the 5$\alpha$ condensed state.

6 pages, 5 figures. The part of the analysis is updated, and some discussions are added

References in corpus (5)

• Structure and rotations of the Hoyle state
• Evidence for Triangular D_3h Symmetry in 12C
• Alpha-particle condensation in 16O via a full four-body OCM calculation
• Cluster formation in pre-compound nuclei in the time-dependent framework
• Characterization of the proposed 4-α cluster state candidate in 16O

Cited by in corpus (15)

• Evidence of bicluster structure in the ground state of ${}^{20}$Ne
• Search for the 6$\alpha$ condensed state in ${}^{24}$Mg using the ${}^{12}\mathrm{C}+{}^{12}\mathrm{C}$ scattering
• Prospects of searching for unstable nucleus states in relativistic nuclear fragmentation
• Search for $\alpha$ condensed states in ${}^{13}$C using $\alpha$ inelastic scattering
• Shape of 12C
• Semi-microscopic construction of multi-$\alpha$ cluster spaces
• Quartet correlations near the surface of $N=Z$ nuclei
• Impact of pion tensor force on alpha clustering in ${}^{20}$Ne
• Polaronic neutron in dilute alpha matter: A $p$-wave Bose polaron
• Shell and cluster structures in ${}^{20}$Ne in the variation of multiple bases of the antisymmetrized molecular dynamics
• Bose-Einstein condensation of five $\alpha$ clusters in ${}^{20}$Ne and supersolidity
• Temperature of the hot $\alpha$-source: a guidance to probe the Bose-Einstein condensation of $\alpha$ clusters in the heavy-ion collision
• Implication of odd-even staggering in the charge radii of calcium isotopes
• Six-$\alpha$ cluster Bose-Einstein condensation and supersolid ${}^{12}$C($0_2^{+})$+${}^{12}$C($0_2^{+})$ molecular structure in ${}^{24}$Mg
• The ${}^8$Be nucleus and the Hoyle state in dissociation of relativistic nuclei