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Five-body resonances of 8C using the complex scaling method
| Title: | Five-body resonances of 8C using the complex scaling method |
| Authors: | Myo, Takayuki Browse this author | | Kikuchi, Yuma Browse this author | | Katō, Kiyoshi Browse this author →KAKEN DB |
| Issue Date: | Mar-2012 |
| Publisher: | American Physical Society |
| Journal Title: | Physical Review C |
| Volume: | 85 |
| Issue: | 3 |
| Start Page: | 034338 |
| Publisher DOI: | 10.1103/PhysRevC.85.034338 |
| Abstract: | We study the resonance spectroscopy of the proton-rich nucleus C-8 in the alpha + p + p + p + p cluster model. Many-body resonances are treated on the correct boundary condition as the Gamow states using the complex scaling method. We obtain the ground state of 8C as a five-body resonance for the first time, which has dominantly the subclosed (p(3/2))(4) configuration and agrees with the recent experiment for energy and decay width. We predict the second 0(+) state with the excitation energy of 5.6 MeV, which corresponds to the 2p2h state from the ground state. We evaluate the occupation numbers of four valence-protons in the C-8 states and also the J(pi) distribution of proton-pair numbers of the two 0(+) states of C-8. The ground state involves a large amount of the 2(+) proton-pair fraction, while the excited 0(2)(+) state almost consists of two of the 0(+) proton pairs, which can be understood from the (p(3/2))(2)(p(1/2))(2) configuration. We also discuss the mirror symmetry between C-8 and He-8 with an alpha+four nucleon picture. It is found that the 0(+) states retain the mirror symmetry well for the configuration properties of two nuclei. |
| Rights: | ©2012 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/49117 |
| 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: 加藤 幾芳
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