Microscopic study of neutron-rich dysprosium isotopes
Microscopic study of neutron-rich dysprosium isotopes
复制标题
富中子镝同位素的显微研究
DOI：
10.1140/epja/i2013-13004-1
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
S. Lerma
中科院分区：
文献类型：
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作者：
C. E. Vargas;V. Velázquez;S. Lerma
重核的微观研究由于涉及大的价空间而非常缺乏。通过使用基于对称性的模型可以避免这个计算问题。本文在赝SU（3）模型的框架下研究了160 - 168 Dy同位素的基态、γ和β带及其B（E2）跃迁强度。此外，还考虑了三个类转子项，它们的自由参数对链的所有成员都是固定的，用于微调转动带的转动惯量以及γ和β带的带头。该模型成功地描述了一个系统的方式在这些核的旋转功能，并允许外推到中壳层nucleus 170 Dy。结果表明，它是可能的，研究一个完整的链的同位素或同位素在该地区与本模型。
Microscopic studies in heavy nuclei are very scarce due to large valence spaces involved. This computational problem can be avoided by means of the use of symmetry-based models. Ground-state,γandβbands, and theirB(E2) transition strengths in160–168Dy isotopes, are studied in the framework of the pseudo-SU(3) model which includes the preserving symmetryQ·Qterm and the symmetry-breaking Nilsson and pairing terms, systematically parametrized. Additionally, three rotor-like terms are considered, whose free parameters, fixed for all members of the chain, are used to fine tune the moment of inertia of rotational bands and the band head ofγandβbands. The model succesfully describes in a systematic way rotational features in these nuclei and allows to extrapolate toward the midshell nucleus170Dy. The results presented show that it is possible to study a full chain of isotopes or isotones in the region with the present model.