128—150Ce偶偶核的低能谱和电磁跃迁的相互作用玻色子模型

采用相互作用玻色子模型研究了^128—150Ce同位素核的低能正宇称态的能谱和电磁跃迁.应用简单的哈密顿量很好的描述它们的能谱和E2跃过.研究表明,这些偶偶Ce核是属于U(5)到SU(3)过渡核,而¹⁴⁶Ce以后的核基本是完全的转动核.     

164—182Hf核的低能谱和电磁跃迁的相互作用玻色子模型

采用相互作用玻色子模型研究了^164—182Hf偶偶核的低能谱和电磁跃迁, 应用一个U(5)→SU(3)简化哈密顿量很好的描述它们的低能谱和电磁跃迁过渡. 结果表明^164—182Hf同位素核基本上属于U(5)→SU(3)的过渡核.     

140-162Gd核的低能谱和电磁跃迁的相互作用玻色子模型

采用相互作用玻色子模型研究了140-162Gd偶偶核的低能谱和电磁跃迁,应用一个U(5)→SU(3)的简化哈密顿量很好地描述它们的低能谱和电磁跃迁过渡.结果表明140-162Gd同位素核基本上属于U(5)→SU(3)的过渡核.     

q变形转动惯量对148Gd核超形变带的描述

利用q变形转动惯量的转子模型,系统地计算了¹⁴⁸Gd核6个超形变带的E2r跃迁能谱以及相应的动力学转动惯量随转动频率的变化关系.计算结果表明,q变形转动惯量的转子模型不仅能较精确地描述超形变晕带,而且可以描述超形变激发带.     

镱原子超精细诱导5d6s 3D1,3→6s2 1S0 E2跃迁及超精细常数的精确计算

在镱原子中,利用5d6s³D₁→6s²¹S₀跃迁探索宇称破缺效应已经得到了深入的研究.但是5d6s³D₁态与基态6s²¹S₀之间的M1跃迁和超精细诱导E2跃迁很大程度上影响了宇称破缺信号的探测.因此,很有必要精确计算5d6s³D₁态与基态6s²¹S₀之间的M1跃迁和超精细诱导E2跃迁的跃迁概率.本文利用多组态Dirac-Hartree-Fock理论精确计算了5d6s³D₁→6s²¹S₀ M1跃迁和超精细诱导5d6s³D_1,3→6s²¹S₀ E2跃...     

Spectra and E2 Transition Rates in 116-132X in the IBM

The positive-parity collective states in the even-even ^116-132Xe isotopes are studied in the framework of the interacting boson model. It is found that the isotopes can be well described by a schematic Hamiltonian in transition from U(5) to SU(3) dynamical symmetry. As the valence neutron number changes, the structure of the isotopes shows regular patterns of change.     

LOW-LYING SPECTRA AND E2 TRANSITION RATES IN EVEN--EVEN Pd ISOTOPES IN THE INTERACTING BOSON MODEL

The positive parity collective states in the even-even ¹⁰⁰Pd-¹¹⁶Pd isotopes are studied in the framework of the interacting boson model. A schematic Hamiltonian capable of describing their spectra and transition is used. It is found that the spectra can be well described by a U(5) plus SU(3) perturbation interaction. As the valence neutron number changes, the structure of the isotopes shows regular patterns of change. In the meantime, the behaviour of 0⁺₂ can also be partially described by the model.     

62-76Zn核的低能谱和电磁跃迁的相互作用玻色子模型(英文)

采用相互作用玻色子模型研究了62—76Zn核的低能正宇称态的能谱和电磁跃迁.应用一个简单的哈密顿量能够较好地描述它们的能谱和电四极跃迁.研究表明,62—76Zn同位素核基本上属于U(5)到O(6)的过渡核.Spectra and E2 transition rates for the even even 62-76Zn isotopes are studied in the framework of the interacting boson model. A schematic Hamiltonian capable of describing their spectra and transition is used. It is found that the even even 62-76Zn isotopes are in the transition from U(5) to O(6) dynamical symmetry.     

^140-262Gd核的低能谱和电磁跃迁的相互作用玻色子模型

采用相互作用玻色子模型研究了^140-262Gd偶偶核的低能谱和电磁跃迁，应用一个U（5）→SU（3）的简化哈密顿量很好地描述它们的低能谱和电磁跃迁过渡．结果表明^140-262Gd同位素核基本上属于U（5）→SU（3）的过渡核．     

Low-lying spectra and E2 transition rates in 160-170Er isotopes in the interaction boson model

Spectra and E2 transition rates for the 160-170Er isotopes are studied in the framework of the interaction boson model. A schematic Hamiltonian able to describe their spectra and B(E2) transition is used.It is found that the 160-170Er isotopes are in the transition from the vibrational limit to rotational limit.