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通过系统研究A~190区超形变核中转动带的转动惯量、角动量顺排、旋称分裂随转动频率的变化规律, 结合我们用处理对力的粒子数守恒方法的计算结果, 对A~190区所有转动带的组态结构给出了一个整体的描述. 绝大多数超形变带都建立在强耦合轨道上, 例如中子[512]5/2, [624]9/2. 少数超形变带则建立在高j闯入轨道上, 即中子[761]3/2, [752]5/2. 根据我们提出的组态结构所进行的理论计算结果表明, A~190区所有转动带的一般行为、反常变化和带交叉都得到了满意的解释. 相似文献
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采用处理含有对力的推转壳模型的粒子数字恒方法研究了A-190区奇奇核194TI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194TI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形的影响,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。 相似文献
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The microscopic mechanism of the identical bands in odd-odd nucleus ^194Tl and its neighbour odd-A nucleus ^193Tl are investigated using the particle-number conserving method with monopole and quadrupole pairing interaction. It is found that the blocking effect plays an important role in the variation of moments of inertia (J^(1) and J^(2)) with rotational frequency for the superdeformed bands and identical bands. The alignment of 194T1 bands with respect to the ^193Tl(1) band used as a reference is also discussed. 相似文献
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利用机械能守恒和恒等式,求解傅科摆相对运动方程,得到了任意初始条件下的极坐标解析解,并明确了不同轨迹形态与初始条件之间的对应关系. 相似文献
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Seven experimentally observed bands of 155Tb are analyzed in detail,using the particle-number-conserving method for treating the cranked shell model with monopole and quadrupole pairing interactions.We satisfactorily reproduce the experimental alignments and especially focus on the microscopic mechanism of the second back-bending and the influence of pair interaction on ultrahigh spins.Our calculated results show that the πi13/2 orbitals are too high to give a contribution to the moment of inertia below ω≈ 0.7 MeV.Instead,the crossing between the π[541]1/2 and other proton orbitals is responsible for the second back-bending.We assign a possible configuration to the decoupled band found in 155Tb and predict eleven bands which are experimentally unobserved. 相似文献
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