Dynamical Effects on the 9Li-n Interaction Induced by Pauli Blocking of the Jπ=0+ Pairing Correlation

• Kato Kiyoshi

  Division of Physics, Graduate School of Science, Hokkaido University, Sapporo 060–0810, Japan

• Yamada Taiichi

  Laboratory of Physics, Kanto Gakuin University, Yokohama 236–8501, Japan

• Ikeda Kiyomi

  Department of Physics, Niigata University, Niigata 950–2101, Japan

書誌事項

タイトル別名

• Dynamical Effects on the 9Li-n Interaction Induced by Pauli Blocking of the J.PI. = 0+ Pairing Correlation.
• Dynamical Effects on the 9Li-n Interaction Induced by Pauli Blocking of the J パイ 0 Pairing Correlation

抄録

The ⁹Li-n interaction is discussed based on the idea of the Pauli blocking for the J^π = 0⁺ neutron pairing correlation in the ⁹Li core due to the presence of the last valence neutron. The present studies are developed in a framework of the microscopic coupled-channel model for {⁹Li((0p_3/2)⁴_ν) + n} + {⁹Li((0p_3/2)²_ν (0p_1/2)²_ν) + n} + {⁹Li((0p_3/2)²_ν (1s0d)²_ν) +n}. The channel of the present model consists of the last valence neutron coupled with a ⁹Li configurational state connected by the J^π = 0⁺ pairing interaction. Due to the presence of the valence neutron in the 0p_1/2 orbital, the (0p_3/2)² → (0p_1/2)² jump in the ⁹Li core is prevented. Thus, the p_1/2-orbital neutron states experience a strong repulsive effect due to the lack of the configuration mixing between (0p_3/2)⁴_ν and (0p_3/2)²_ν (0p_1/2)²_ν, and its energy rises up significantly. In contrast to this, the sd-orbital neutron imparts a very weak effect on the configuration mixing. As a result, the s_1/2-orbital state is obtained in the vicinity of the threshold as a bound state or virtual resonance for the ⁹Li-n interaction which reproduces 1⁺(S_n = -0.42 MeV) and 2⁺(S_n = -0.82 MeV) states consistently with experimental data observed by Bohlen et al. The effective ⁹Li-n potential which has the strong parity dependence deduced from the present coupled-channel calculation is discussed to be very promising for studying the halo structure of ¹¹Li within the ⁹Li + n + n model.

収録刊行物

• Ｐｒｏｇｒｅｓｓ　ｏｆ　Ｔｈｅｏｒｅｔｉｃａｌ　Ｐｈｙｓｉｃｓ

  Ｐｒｏｇｒｅｓｓ　ｏｆ　Ｔｈｅｏｒｅｔｉｃａｌ　Ｐｈｙｓｉｃｓ 101 (1), 119-138, 1999

  一般社団法人 日本物理学会

キーワード

• Physics and Astronomy (miscellaneous)

詳細情報

• CRID: 1390001204157240832
• NII論文ID: 110001209289
• NII論文ID: 210000110285
• NII書誌ID: AA00791455
• DOI: 10.1143/ptp.101.119
• BIBCODE: 1999PThPh.101..119K
• ISSN: 13474081
• ISSN: 0033068X
• NDL書誌ID: 4644631
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4644631
• Web Site: http://academic.oup.com/ptp/article-pdf/101/1/119/19570869/101-119.pdf
• 本文言語コード: en
• データソース種別:
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  • CiNii Articles
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