Negative parity states of ${}^{11}$B and ${}^{11}$C and the similarity with $^{12}C

Abstract

The negative parity states of ${}^{11}$B and ${}^{11}$C were studied based on the calculations of antisymmetrized molecular dynamics(AMD). The calculations well reproduced the experimental strengths of Gamov-Teller(GT), $M1$ and monopole transitions. We, especially, focused on the $3/2_3^{-}$ and $5/2_2^{-}$ states, for which GT transition strengths were recently measured. The weak $M1$ and GT transitions for the $3/2_3^{-}$ in ${}^{11}$B and ${}^{11}$C are described by a well-developed cluster structure of $2\alpha$+$t$ and $2\alpha$+${}^3$He, respectively, while the strong transitions for the $5/2_2^{-}$ is characterized by an intrinsic spin excitation with no cluster structure. It was found that the $3/2_3^{-}$ state is a dilute cluster state, and its features are similar to those of the ${}^{12}$C$(0_2^{+})$ which is considered to be a gas state of three $\alpha$ clusters.

arXiv comment10 pages, 4 figures, submitterd to Physical Review C

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Cited by in corpus (28)

• Microscopic Clustering in Light Nuclei
• Microscopic study of 4-alpha-particle condensation with proper treatment of resonances
• Isoscalar dipole transition as a probe for asymmetric clustering
• Alpha-resonance structure in ${}^{11}$C studied via resonant scattering of ${}^7$Be+$\alpha$ and ${}^7$Be($\alpha$, $p$) reaction
• $\alpha +\alpha +t$ cluster structures and Hoyle-analogue states in ${}^{11}$B
• Alpha cluster structures and monopole excitations in ${}^{13}$C
• Dineutron structure in ${}^8$He
• Cluster structures in ${}^{11}$B
• Cluster states and monopole transitions in ${}^{16}$O
• Nuclear Alpha-Particle Condensates
• ${}^{12}\mathbf{C}+{}^{12}\mathbf{C}$ Fusion ${\mathbf{S}}^{\ast }$-factor from a Full-microscopic Nuclear Model
• Isoscalar monopole and dipole excitations of cluster states and giant resonances in ${}^{12}$C
• Real-time evolution method and its application to 3$\alpha$ cluster system
• Hoyle-analogue state in 13C studied with Antisymmetrized Molecular Dynamics
• Multi-cluster dynamics in ${}_{\Lambda }^{13}\mathrm{C}$ and analogy to clustering in ${}^{12}\mathrm{C}$
• Toroidal, compressive, and $E1$ properties of low-energy dipole modes in ${}^{10}$Be
• Inversion doublets of reflection-asymmetric clustering in 28Si and their isoscalar monopole and dipole transitions
• Monopole oscillations in light nuclei with a molecular dynamics approach
• Cluster structures and monopole transitions of ${}^{14}$C
• Observation of ${}^6$He+$t$ cluster states in ${}^9$Li
• 2$\alpha$+$t$ cluster structure in ${}^{11}$B
• Systematic investigation of the Hoyle-analog states in light nuclei
• 2alpha+t cluster feature of $3/2_3^{-}$ state in ${}^{11}$B
• Gamow-Teller transitions from ${}^{9,11}$Li to ${}^{9,11}$Be
• Monopole and dipole transitions of the cluster states of 18O
• alpha+28Si and 16O+16O molecular states, and their isoscalar monopole strengths
• Persistence of cluster structure in the ground state of ${}^{11}$B
• Six-$\alpha$ cluster Bose-Einstein condensation and supersolid ${}^{12}$C($0_2^{+})$+${}^{12}$C($0_2^{+})$ molecular structure in ${}^{24}$Mg