Description of the Even Tin Isotopes in a Mixing of Shell Model and IBA Model

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概要

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• The positive parity energy levels of even ^<108-124>Sn isotopes are studied in terms of a mixing of shell model and interacting boson approximation model. In the calculation, the basis states consist of a pure boson configuration and N_B--1 bosons plus a fermion pair configuration, where N_B is the valence boson number outside the closed shell. The fermions are allowed to excite to the s_<1/2>, d_<3/2>, d_<5/2>, g_<7/2> and h_<11/2> single particle orbitals. The interaction Hamiltonian contains three parts: pure boson Hamiltonian, pure fermion Hamiltonian and boson-fermion mixing Hamiltonian. The calculated energy levels are compared with the observed data. The wavefunctions are used to calculate B(E2) values. It is found that the calculated energy spectra and B(E2) values agree reasonably well with the experimental values.

• 理論物理学刊行会の論文
• 1995-04-25

著者

• Chuu Der-san

  Department Of Electrophysics National Chiao Tung University

• HSIEH S.T.

  Department of Physics, National Tsing Hua University

• Hsieh S.t.

  Department Of Physics National Tsing Hua University

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