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We performed the distorted wave Born-approximation calculation with the single-folding potential and the multipole decomposition analysis to determine the isoscalar transition strengths in 13C. We found a bump structure around Ex = 12.5 MeV consisting of several 1/2− states, which were excited by the isoscalar monopole (IS0) transitions from the ground state. We proposed that this bump was due to the mirror state of the 13.5 MeV-state in 13N, which dominantly\ndecayed to the α condensed state in 12C. Although this bump was speculated\nto be a candidate for the α condensed state, the OCM calculation suggested that the α condensed state is unlikely to emerge as the negative parity states. We also found two 1/2+ or 3/2+ states at Ex = 14.5 and 16.1 MeV excited by the isoscalar dipole (IS1) transitions. We compared the experimental level diagram and the IS0 and IS1 transitions strengths with those predicted by shell-model and cluster-model calculations. 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Search for α condensed states in 13C using α inelastic scattering
https://repo.qst.go.jp/records/84767
https://repo.qst.go.jp/records/84767a11cb096-1e74-45c4-a377-02d5dcbe031c
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-07-01 | |||||
タイトル | ||||||
タイトル | Search for α condensed states in 13C using α inelastic scattering | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Inaba, K.
× Inaba, K.× Sasamoto, Y.× Kawabata, T.× Fujiwara, M.× Funaki, Y.× Hatanaka, K.× Itoh, K.× Itoh, M.× Keigo, Kawase× Matsubara, H.× Maeda, Y.× Suda, K.× Sakaguchi, S.× Shimizu, Y.× Tamii, A.× Tameshige, Y.× Uchida, M.× Uesaka, T.× Yamada, T.× Keigo, Kawase |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We searched for the α condensed state in 13C by measuring the α inelastic scattering at Eα = 388 MeV at forward angles including 0 degrees. We performed the distorted wave Born-approximation calculation with the single-folding potential and the multipole decomposition analysis to determine the isoscalar transition strengths in 13C. We found a bump structure around Ex = 12.5 MeV consisting of several 1/2− states, which were excited by the isoscalar monopole (IS0) transitions from the ground state. We proposed that this bump was due to the mirror state of the 13.5 MeV-state in 13N, which dominantly decayed to the α condensed state in 12C. Although this bump was speculated to be a candidate for the α condensed state, the OCM calculation suggested that the α condensed state is unlikely to emerge as the negative parity states. We also found two 1/2+ or 3/2+ states at Ex = 14.5 and 16.1 MeV excited by the isoscalar dipole (IS1) transitions. We compared the experimental level diagram and the IS0 and IS1 transitions strengths with those predicted by shell-model and cluster-model calculations. We suggested that the 16.1-MeV state is a possible candidate for the α condensed state predicted by the cluster-model calculations. However, the theoretical IS1 transition strength for this state is significantly smaller than the measured value. Further experimental information is strongly desired to establish the α condensed state in 13C. |
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書誌情報 |
Progress in Theoretical and Experimental Physics 巻 2021, 号 9, p. 093D01, 発行日 2021-09 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2050-3911 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1093/ptep/ptab102 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://academic.oup.com/ptep/article/2021/9/093D01/6348179 |