Coexistence of α+α+n+n and α+t+t cluster structures in 10Be

Itagaki, N. and Ito, M. and Milin, Matko and Hashimoto, T. and Ishiyama, H. and Miyatake, H. (2008) Coexistence of α+α+n+n and α+t+t cluster structures in 10Be. Physical Review C, 77 (6). pp. 67301-4. ISSN 0556-2813

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Abstract

The coexistence of the α+α+n+n and α+t+t cluster structures in the excited states of 10Be has been discussed. In the previous analysis, all the low-lying states of 10Be were found to be well described by the motion of the two valence neutrons around two α clusters. However, the α+t+t cluster structure was found to coexist with the α+α+n+n structure around Ex=15 MeV, close to the corresponding threshold. We have introduced a microscopic model to solve the coupling effect between these two configurations. The K=0 and K=1 states are generated from the α+t+t configurations due to the spin coupling of two triton clusters. The present case of 10Be is one of the few examples in which completely different configurations of triton-type (α+t+t three-center) and α-type (α+α+n+n two-center) clusters coexist in a single nucleus in the same energy region.

Item Type: Article
Keywords: cluster structures, 10Be, microscopic model, triton-type and alpha-type clusters
Date: June 2008
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2008) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 098-1191005-2890
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 28 May 2014 11:37
Last Modified: 28 May 2014 11:37
URI: http://digre.pmf.unizg.hr/id/eprint/1827

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