Cluster-shell competition in light nuclei
- Department of Physics, University of Tokyo, Hongo Tokyo 113-0033 (Japan)
We demonstrate whether the cluster structure dissolves or remains when the shell-model-like model space is introduced in addition to the cluster model space in light nuclei. Although the binding energies of {sup 8}Be, {sup 10}Be, and {sup 10}B become larger by about 1-2 MeV by adding shell-model-like basis states to the {alpha}+{alpha}+N+N+{center_dot}{center_dot}{center_dot} basis states, the {alpha}-{alpha} structure is a dominant configuration of the ground states. However, {alpha}-breaking wave functions strongly mix in {sup 12}C, and the decrease of the energy from the 3{alpha} configuration by about 6 MeV is a clue to resolving a long-standing problem of the binding energies of {sup 12}C and {sup 16}O. The improved version of antisymmetrized molecular dynamics (AMD), AMD superposition of selected snapshots (AMD triple-S), is used to show the cluster-shell competition of these nuclei.
- OSTI ID:
- 20695725
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 70, Issue 5; Other Information: DOI: 10.1103/PhysRevC.70.054307; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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