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Characteristic alpha and He-6 decays of linear-chain structures in C-16
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| Title: | Characteristic alpha and He-6 decays of linear-chain structures in C-16 |
| Authors: | Baba, Tomoyuki Browse this author | | Kimura, Masaaki Browse this author →KAKEN DB |
| Keywords: | Alpha decay | | Heavy-particle decays | | Nuclear structure & decays | | Nuclear physics |
| Issue Date: | 14-May-2018 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review C |
| Volume: | 97 |
| Issue: | 5 |
| Start Page: | 054315 |
| Publisher DOI: | 10.1103/PhysRevC.97.054315 |
| Abstract: | The linear-chain states of C-16 and their decay modes are theoretically investigated by using the antisymmetrized molecular dynamics. It is found that the positive-parity linear-chain states have the (3/2(pi)(-)) 2(1/2(sigma)(-))(2) configuration and primary decay to Be-12(2(1)(+)) as well as to Be-12(g.s.) by alpha-particle emission. Moreover, we show that they also decay via the He-6 + Be-10 channel. In the negative-parity states, it is found that two types of linear chains exist. One has the valence neutrons occupying the molecular orbits (3/2(pi)(-))(2)(1/2(sigma)(-))(3/2(pi)(+)), while the other's configuration cannot be explained in terms of the molecular orbits because of the strong parity mixing. Both configurations constitute the rotational bands with a large moment of inertia and intraband E2 transitions. Their alpha and He-6 reduced widths are sufficiently large to be distinguished from other noncluster states although they are smaller than those of the positive-parity linear chain. |
| Rights: | ©2018 American Physical Society | | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/71439 |
| 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)
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Submitter: 木村 真明
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