Tadahiro Suhara

Cluster structures of excited states in 14 C

Structures of excited states in {sup 14}C are investigated with a method of {beta}-{gamma} constraint antisymmetrized molecular dynamics in combination with the generator coordinate method. Various excited states with the developed 3{alpha}-cluster core structures are suggested in positive- and negative-parity states. In the positive-parity states, triaxial deformed and linear-chain structures are found to construct excited bands. Interestingly, {sup 10}Be+{alpha} correlation is found in the cluster states above the {sup 10}Be+{alpha} threshold energy.

Quadrupole Deformation β and γ Constraint in a Framework of Antisymmetrized Molecular Dynamics

We propose a new method of the β-γ constraint for quadrupole deformation in antisymmetrized molecular dynamics (AMD) to describe various cluster and shell-model structures in the ground and excited states of light nuclei. We apply this method to N = 6 isotones, 10 Be, 12 C, 9 Li, and 11 B, and find various structures as functions of the deformation parameters, β and γ. In these nuclei, shell-model-like structures appear in the small β region, while cluster structures develop well in the large β region where various geometric configurations of clusters are obtained depending on the γ parameter. For 10 Be and 12 C, we superpose the basis AMD wave functions obtained by the β-γ constraint method to calculate energy spectra, and prove the advantages of the present method of the two-dimensional β-γ constraint in the framework of AMD. Subject Index: 210, 211, 212, 213

Effects ofα-cluster breaking on3α-cluster structures inC12

To clarify the effects of

Antisymmetrized molecular dynamics studies for exotic clustering phenomena in neutron-rich nuclei

\alpha

Novel and simple description for a smooth transition from α-cluster wave functions to jj-coupling shell model wave functions

-cluster breaking on 3

Novel and simple description for a smooth transition from

\alpha

\alpha

cluster structures in

-cluster wave functions to

^{12}

jj

C, we investigate

-coupling shell model wave functions

^{12}