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3α clustering in excited states of C-16

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Title: 3α clustering in excited states of C-16
Authors: Baba, T. Browse this author
Chiba, Y. Browse this author
Kimura, M. Browse this author →KAKEN DB
Issue Date: 29-Dec-2014
Publisher: American Physical Society
Journal Title: Physical review C
Volume: 90
Issue: 6
Start Page: 64319
Publisher DOI: 10.1103/PhysRevC.90.064319
Abstract: The α-cluster states of C-16 are investigated by using antisymmetrized molecular dynamics. It is shown that two different types of α-cluster states exist: triangular and linear-chain states. The former has an approximate isosceles triangular configuration of α particles surrounded by four valence neutrons occupying the sd shell, while the latter has the linearly aligned α particles with (sd)(2)(pf)(2) neutrons. It is found that the structure of the linear-chain state is qualitatively understood in terms of the 3/2(pi)(-) and 1/ 2(sigma)(-) molecular orbits as predicted by molecular-orbital model, but there exists a non-negligible Be-10 + α + 2n correlation. The bandhead energies of the triangular and linear-chain rotational bands are 8.0 and 15.5 MeV, and the latter is close to the He-4 + Be-12 and He-6 + 10Be threshold energies. It is also shown that the linear-chain state becomes the yrast state at J(pi) = 10(+) with E-x = 27.8 MeV owing to its very large moment of inertia comparable with hyperdeformation.
Rights: ©2014 American Physical Society
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 木村 真明

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