Study of Electron-Nucleus Scattering and Nuclear Electromagnetic Properties Based on Microscopic IBM(I) Theoretical Approach Based on BE Method

ZHANG Zhan-Jun; FANG Xiang-Zheng; SANG Jian-Ping; LIU Yong

Chinese Physics C> 2001, Vol. 25> Issue(2) : 139-148

Study of Electron-Nucleus Scattering and Nuclear Electromagnetic Properties Based on Microscopic IBM(I) Theoretical Approach Based on BE Method

Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071, China2 Department of Physics, Anhui University, Hefei 230039, China3 Department of Physics, Wuhan, University, Wuhan 430072, China4 Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

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Nuclear transition charge/current density operators are composed according to valence nu-cleon degrees of freedom. By using boson expansion technique, a microscopic theoretical method (BE method) about the transformation of the fermion density operators into boson density operators is established. Thus, calculations of the nuclear charge/current densities can be carried out in the boson state space by taking advantage of the eigenfunctions of the microscopic IBM. Associated with the formal theories of electron-nucleus scattering and nuclear electromagnetic transition, a microscopic approach, which can be used to study nuclear transition charge/current densities, various form factors, differential cross sections, reduced transition rates, electromagnetic multipole moments, g factors and so on, is built up. The preliminary results based on the microscopic sdIBM-2 has indicated that the physical quantities mentioned before can ha described well in the framework of the microscopic approach. The preliminary calculations of spectrum, E2 transition boson structure functions (BSF) and transition charge density from 21+ to 01+ in ¹⁹²Os are carried out in terms of the present approach in the frame of the microscopic ed IBM-2. It is found that a reasonable description of these physical quantities has been achieued.

References

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ZHANG Zhan-Jun, FANG Xiang-Zheng, SANG Jian-Ping and LIU Yong. Study of Electron-Nucleus Scattering and Nuclear Electromagnetic Properties Based on Microscopic IBM(I) Theoretical Approach Based on BE Method[J]. Chinese Physics C, 2001, 25(2): 139-148.

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Received: 2000-01-19
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of Electron-Nucleus Scattering and Nuclear Electromagnetic Properties Based on Microscopic IBM(I) Theoretical Approach Based on BE Method

Corresponding author: ZHANG Zhan-Jun,

Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071, China2 Department of Physics, Anhui University, Hefei 230039, China3 Department of Physics, Wuhan, University, Wuhan 430072, China4 Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

Received Date: 2000-01-19

Accepted Date: 1900-01-01

Available Online: 2001-02-05

Abstract: Nuclear transition charge/current density operators are composed according to valence nu-cleon degrees of freedom. By using boson expansion technique, a microscopic theoretical method (BE method) about the transformation of the fermion density operators into boson density operators is established. Thus, calculations of the nuclear charge/current densities can be carried out in the boson state space by taking advantage of the eigenfunctions of the microscopic IBM. Associated with the formal theories of electron-nucleus scattering and nuclear electromagnetic transition, a microscopic approach, which can be used to study nuclear transition charge/current densities, various form factors, differential cross sections, reduced transition rates, electromagnetic multipole moments, g factors and so on, is built up. The preliminary results based on the microscopic sdIBM-2 has indicated that the physical quantities mentioned before can ha described well in the framework of the microscopic approach. The preliminary calculations of spectrum, E2 transition boson structure functions (BSF) and transition charge density from 21+ to 01+ in ¹⁹²Os are carried out in terms of the present approach in the frame of the microscopic ed IBM-2. It is found that a reasonable description of these physical quantities has been achieued.

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Study of Electron-Nucleus Scattering and Nuclear Electromagnetic Properties Based on Microscopic IBM(I) Theoretical Approach Based on BE Method

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