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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. 相似文献
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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. 相似文献
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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. 相似文献
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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. 相似文献
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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. 相似文献
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在HF和CCSD水平上研究了重金属钋化物团簇M2Po(M=Cu,Ag,Au)中电子相关效应.结果显示,电子相关效应改变键角大约16°,但几乎不改变键长,说明电子相关效应是作用在重金属原子上的一种切向吸引力.理论分析确定,这个吸引力来自于重金属闭壳层d10~d10之间的van der Wals吸引力.采用一个较简单的经典模型拟合了电子相关势能函数,并估算了它的大小和作用模式. 相似文献
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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. 相似文献
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The E-Gamma Over Spin (E-GOS) analysis method is applied to the study of the shape phase transition of neutron-rich even-even light nuclei with Z=20-28. Some valuable results are gained through analysing E-GOS curves of Ca, Ti, Cr, Fe and Ni nuclei. 相似文献