摘要
本文应用中子-质子相互作用玻色子模型理论数值计算了^(150)Gd、^(152)Gd和^(154)Gd核混合对称态的能量和电磁跃迁几率。计算表明,^(150)Gd核最低能量的混合对称态是2_M^+,而^(152)Gd和^(154)Gd则为1_M^+,随着核子数的增加;B(M1,0_I^+→1_M^+)由小变大,表现出U(5)极限向SU(3)极限的转移。另外Majorana相互作用对混合对称态能量和电磁跃迁几率的影响也作了讨论。
The mixed symmetry states in nuclei of ^(150)Gd, ^(152)Gd and ^(154)Gd are numerically studied with the theory of the neutron-proton interacting boson model. It shows that the mixed state of the lowest energy in ^(150)Gd nuclide is 2_M^+ but ones in ^(152)Gd and ^(154)Gd are 1_M^+ and that the value of B(M1,0_1^+-1_M^+) increases with the total nucl- eon number of Gd isotopes, which indicate a transition from U(5) limit to SU(3) limit. The influence of the Majorana interaction on the energy and electromagnetic transition probability of the mixed symmetry state is also discussed.
出处
《高能物理与核物理》
CSCD
北大核心
1992年第4期379-384,共6页
High Energy Physics and Nuclear Physics