alpha+28Si and 16O+16O molecular states, and their isoscalar monopole strengths

Abstract

The properties of the alpha+28Si and 16O+16O molecular states which are embedded in the excited states of 32S and can have an impact on the stellar reactions are investigated using the antisymmetrized molecular dynamics. From the analysis of the cluster spectroscopic factors, the candidates of alpha+28Si and 16O+16O molecular states are identified close to and above the cluster threshold energies. The calculated properties of the alpha+28Si molecular states are consistent with those reported by the alpha+28Siresonant scattering experiments. On the other hand, the 16O+16O molecular state, which is predicted to be identical to the superdeformation of 32S, is inconsistent with the assignment proposed by an alpha inelastic scattering experiment. Our calculation suggests that the monopole transition from the ground state to the 16O+16O molecular state is rather weak and is not strongly excited by the alpha inelastic scattering.

References in corpus (35)

• Alpha-particle condensation in 16O via a full four-body OCM calculation
• $2\alpha +t$ cluster structure in ${}^{11}$B
• Deformed Base Antisymmetrized Molecular Dynamics and its Application to ^{20}Ne
• Negative parity states of ${}^{11}$B and ${}^{11}$C and the similarity with $^{12}C
• Beyond-mean-field-model analysis of low-spin normal-deformed and superdeformed collective states of S32, Ar36, Ar38 and Ca40
• Isoscalar monopole excitations in ${}^{16}$O: $\alpha$-cluster states at low energy and mean-field-type states at higher energy
• Antisymmetrized molecular dynamics studies for exotic clustering phenomena in neutron-rich nuclei
• Density Functional Theory studies of cluster states in nuclei
• Isoscalar dipole transition as a probe for asymmetric clustering
• Evolution of Massive Stars Up to the End of Central Oxygen Burning
• ${}^{16}\mathrm{O}{+}^{16}\mathrm{O}$ nature of the superdeformed band of ${}^{32}\mathrm{S}$ and the evolution of the molecular structure
• Cranked Skyrme-Hartree-Fock calculation for superdeformed and hyperdeformed rotational bands in N=Z nuclei from 32S to 48Cr
• Coexistence of cluster structure and superdeformation in ${}^{44}$Ti studied with deformed-basis antisymmetrized molecular dynamics
• Properties of the predicted super-deformed band in ^{32}S
• Alpha cluster structures and monopole excitations in ${}^{13}$C
• From superdeformation to extreme deformation and clusterization in the N~Z nuclei of the A~40 mass region
• Alpha Cluster Structure and Exotic States in a Self-Consistent Model for Light Nuclei
• Cluster structures and superdeformation in ${}^{28}$Si
• Effects of nuclear molecular configurations on the astrophysical S-factor for ${}^{16}$O + ${}^{16}$O
• Investigating the alpha-clustering on the surface of ${}^{120}$Sn via ($p$,$p\alpha$) reaction and the validity of the factorization approximation
• New Constraint of Clustering for AMD and Its Application to the Study of $2\alpha$-${}^{12}$C Structure of ${}^{20}$Ne
• Clustering and Triaxial Deformations of ${}^{40}$Ca
• Cluster states and monopole transitions in ${}^{16}$O
• Isoscalar Giant Resonance Strengths in ${}^{32}$S and possible excitations of superdeformed and ${}^{28}$Si + $\alpha$ cluster bandheads
• Quantitative description of the ${}^{20}$Ne($p$,$p\alpha$)${}^{16}$O cross section as a means of probing the surface $\alpha$ amplitude
• Hoyle-analogue state in 13C studied with Antisymmetrized Molecular Dynamics
• Cluster formations in deformed states for ${}^{28}$Si and ${}^{32}$S
• Superdeformation and clustering in ${}^{40}$Ca studied with Antisymmetrized Molecular Dynamics
• Investigation of $\alpha$ clustering with knockout reactions
• Inversion doublets of reflection-asymmetric clustering in 28Si and their isoscalar monopole and dipole transitions
• Isoscalar dipole excitations in ${}^{16}$O
• Cluster structures and monopole transitions of ${}^{14}$C
• ${}^{12}\mathbf{C}+{}^{16}\mathbf{O}$ molecular resonances at deep sub-barrier energy
• Search for three alpha states around an ${}^{16}$O core in ${}^{28}$Si
• Monopole and dipole transitions of the cluster states of 18O

Cited by in corpus (2)

• ${}^{12}\mathbf{C}+{}^{12}\mathbf{C}$ Fusion ${\mathbf{S}}^{\ast }$-factor from a Full-microscopic Nuclear Model
• Application of the cranking method to the semimicroscopic algebraic cluster model and nuclear molecules