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Container evolution for cluster structures in 16O
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OA
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DOI：10.1103/PhysRevC.97.021304.png)
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Abstract
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Background: alpha + C-12 clustering in O-16 has been of historical importance in nuclear clustering. In the last 15 years the 4 alpha condensate state has been proposed as a new-type cluster state. Purpose: The aim is to reveal a dynamical process of the formation of different kinds of cluster states, in terms of a container aspect of clusters, in O-16. Method: The so-called THSR wave function for the 4a clusters is extended to inclusion of two different containers occupied independently by the C-12 (3a) and a clusters. Results: The five J(pi) = 0(+) states with 4 alpha tetrahedral shape, alpha + C-12 cluster structures, and the 4 alpha condensate character, are found to be represented, to good approximation, by single configurations of the extended THSR wave function with containers of appropriate shape and size. Conclusions: It is demonstrated in O-16 that the dynamical evolution of cluster structures can be caused by size and shape evolution of a container occupied with clusters. The alpha condensate with gaslike 4 alpha configuration appears as a limit of the cluster formation.
Keywords:
STATE
ENERGIES
DYNAMICS
MODEL
C-12
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