投影壳模型研究丰中子奇奇核102,104Nb的转动能谱

运用投影壳模型研究了正常形变丰中子核同位素102,104Nb的低能级能谱, 并指定了它的准粒子组态, 理论计算所得到的能谱曲线与实验给出的能谱曲线非常一致, 说明了投影壳模型对研究重核低能级谱非常有效。 The Projected Shell Model(PSM) is used to study the low energy scheme of the neutron rich normal deformed isotopes of odd odd nuclei 102, 104Nb. The quasiparticle configuration is assigned. The theoretical calculations of the energy band of 102,104Nb could well reproduce the experimental data. It is shown that PSM is a valid method for studying the low energy scheme of heavy nuclei.     

164Lu的三轴超形变核态的理论计算

用三维TRS(totalrouthiansurface)自洽理论对奇奇核164Lu的位能面进行了计算,计算结果与实验上得到的ε2=0.38基本一致,从而从理论上确认了164Lu是三轴超形变核,并且指出了存在三轴超形变带的两个组态. Total routhian surface in~(164)Lu nuclei is calculated according to the three dimensional Total Routhian Surface (TRS) theory. The result of the calculation is in agreement with the experiment. At the same time, two TSD bands could be assigned to the configuration(π\(1/2), α=1/2)(ν\(5/2), α=1/2), (π\(1/2), α=1/2)(ν\(3/2), α=-1/2).     

164Lu的三轴超形变核态的研究

利用TRS方法对双奇核¹⁶⁴Lu的位能面进行了计算,确认了¹⁶⁴Lu核的一条三轴超形变带,结果与实验较好地符合,同时指出了三轴超形变带的一个具体的组态     

A tentative method for assigning the configuration of a triaxial nuclei in TRS

A tentative method based on the principle of minimum energy is put forward for assigning the reasonable configuration of a triaxial nucleus in TRS. This method is proved by the TSD of ¹⁶⁷Lu nucleus that has been calculated previously by TRS.     

三原子分子的U（5）模型

对于线型三原子分子，其振转谱利用Ｕ（５）群的不可约表示进行分类。动力学对称性Ｕ（５）Ｏ（５）Ｏ（３）被研究，并用来讨论了ＨＣＮ分子的能谱，计算结果与实验结果能较好地吻合。     

脱耦合项对K=1/2转动带的转动惯量变化的影响

采用处理含有对力的推转壳模型(CSM)的粒子数守恒方法(PNC)研究了脱耦合项对正常形变奇A核¹⁷¹Yb的[521]1/2转动带的转动惯量随角频率变化的影响. 在计算中同时考虑了单极对力和Y₂₀四极对力, 实验结果在PNC方法计算中得到了较好的重现.     

Tl同位素中全同带的研究

采用推转壳模型下处理对力的粒子数守恒方法对奇奇核¹⁹⁴Tl与奇-A^193,195Tl中全同带存在的微观机制进行了研究. 结果表明, 高-j闯入轨道的堵塞效应在全同带的形成中起了重要作用. 文中对单粒子轨道占有几率和各推转单粒子能级上的粒子对转动惯量的贡献做了详细分析.     

Triaxial Superdeformed Band and Its Formation Mechanism in Odd-Odd Nucleus ^168Lu

Three-dimensional total Routhian surface calculations are carried out to determine the triaxial superdeformation of odd-odd nucleus ^168Lu. One of the new four rotational bands observed in the experiment is identified as a triaxial superdeformed band, in which the neutron shell correction energy plays a key role and the deformationdriving effect of high j intruder orbital plays an additional role in the formation of triaxial superdeformation shape. Its deformation parameters (ε2, ε4, γ) are derived from the analysis, which can reproduce the experimental assignment.     

线性三原子分子U(5)模型中的红外吸收谱线强度

利用U( 5 )群的不可约表示对线性三原子分子振转谱进行分类 ,给出了线性分子HCN和COS的振动谱 ,并且对COS分子红外吸收谱线强度进行了计算 ,所得结果与实验符合较好 .     

超形变奇-奇核194Tl中的双堵塞效应

采用处理含有对力的推转壳模型的粒子数守恒方法研究了A～190区奇奇核194Tl中6条超形变带. 计算结果与实验符合得非常好. 根据我们的PNC计算结果,分别指定了194Tl的6条超形变带的组态,详细分析了质子和中子的堵塞效应对转动惯量的影响. 转动惯量随转动频率的变化主要来源于高N闯入壳(对中子N=7,对质子N=6)的贡献,而其他大壳对转动惯量的贡献基本上不随转动频率变化.