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.     

142-164Dy核的低能谱和电磁跃迁的相互作用玻色子模型

采用IBM模型研究了^142-164Dy核的低能正宇称态的能谱和电磁跃迁。应用U(5)→SU(3)的简化哈密顿量较好地描述了它们的能谱和电磁跃迁。研究结果表明，该核基本属于U(5)→SU(3)的过渡核Spectra and E2 transition rates for the even even 142-164Dy 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 142-164Dy isotopes are in the transition from U(5)to SU(3) dynamical symmetry.     

Mixed symmetry states and electromagnetic transition in the N=Z nucleus ~(28)Si

The interacting boson model with isospin (IBM-3) has been used to study mixed symmetry states and electromagnetic transitions at low-lying states for a ²⁸Si nucleus. The theoretical calculations show that the 2₄⁺ state is the lowest mixed symmetry state in ²⁸Si and the 4₃⁺ state is also a mixed symmetry state.     

A～150区域核晕带的形状变化和共存

利用E-GOS理论分析方法, 对A～150质量区域原子核进行了分析研究, 结果显示这一区域核具有振动和转动共存的特性, 而且存在一个临界点, 在此处原子核的结构特性发生了显著的变化. 同时也发现该区域核基本上处于U(5)→SU(3)过渡区域.     

Mixed symmetry states and isospin excitation in the N =Z nucleus 28Si

The interacting boson model with isospin (IBM-3) has been used to study the isospin excitation states and mixed symmetry states at low spin for 28Si. The theoretical calculations are in agreement with experimental data. The theoretical results show that the 81+ energy is 14.73 MeV.     

Isospin and mixed symmetry structure in 24Mg

The interacting boson model with isospin (IBM-3) has been used to study the isospin excitation states and electromagnetic transitions for ²⁴Mg nucleus. The mixed symmetry states at low spin are also analyzed. The theoretical calculations are in agreement with experimental data. The present calculations indicate that the 3₁⁺ state is the lowest mixed symmetry state.     

Mixed symmetry states and isospin excitation in the N=Z nucleus 28Si

The interacting boson model with isospin (IBM-3) has been used to study the isospin excitation states and mixed symmetry states at low spin for ²⁸Si. The theoretical calculations are in agreement with experimental data. The theoretical results show that the 8⁺₁ energy is 14.73 MeV.     

Description of nucleus ^44Ti in new symmetry limit in IBM-3

Analysis of the spectra and E2 transition rates shows that the empirical scheme of {}^{44}Ti is in good agreement with the predictions of the [U_d (5) \otimes U_{T_d} (3)]⊕U_{T_s} (3) symmetry limit.     

^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．     

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.