Role of the Z = 64 Core Excitation in High-Spin Isomers in Proton-Rich N 〜 82 Nuclei

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概要

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• The high-spin isomers of the N 〜 82 nuclei with Z > 64 are investigated in the shell model framework. We derive an extended seniority reduction formula for the relevant E2 transition strengths. Based on the extended formula, as well as on the approximate degeneracy among the 0h_11/2, 2s_1/2 and 1d_3/2 orbits, we argue that the B(E2) data require the ^146Gd core excitation. The energy levels of both parities and the B(E2) values are simultaneously reproduced by a multi-j shell model calculation, if the pair excitations from (0g_7/21d_5/2) to (2s_1/20h_11/21d_3/2) are taken into account.

• 理論物理学刊行会の論文
• 2002-12-26

著者

• OGAWA Kaku

  Department of Physics, Kyoto University

• Ogawa K

  Department Of Physics Chiba University

• Ogawa Kengo

  Department Of Physics University Of Tokyo

• Ogawa Kengo

  Department Of Physics The University Of Tokyo

• MATSUZAWA Takayuki

  Graduate School of Science arid Technology, Chiba University

• NAKADA Hitoshi

  Department of Physics, Chiba University

• Nakada H

  Department Of Physics Chiba University

• Nakada Hitoshi

  Department Of Physics Chiba University

• Matsuzawa Takayuki

  Graduate School Of Science And Technology Chiba University

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