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3α clustering in excited states of C-16

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タイトル: 3α clustering in excited states of C-16
著者: Baba, T. 著作を一覧する
Chiba, Y. 著作を一覧する
Kimura, M. 著作を一覧する
発行日: 2014年12月29日
出版者: American Physical Society
誌名: Physical review C
巻: 90
号: 6
開始ページ: 64319
出版社 DOI: 10.1103/PhysRevC.90.064319
抄録: 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
資料タイプ: article
URI: http://hdl.handle.net/2115/57924
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 木村 真明

 

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