Neutron halo in deformed nuclei
Neutron halo in deformed nuclei
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DOI：
10.1103/physrevc.82.011301
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发表时间：
2009-09
影响因子：
3.1
通讯作者：
Shan-Gui Zhou;J. Meng;P. Ring;E. Zhao
中科院分区：
文献类型：
--
作者：
Shan-Gui Zhou;J. Meng;P. Ring;E. Zhao
在变形相对论Hartree Bogoliubov （DRHB）理论中研究了变形核中的晕现象。这些弱束缚量子系统为研究核的变形和晕中的粒子之间的相互依赖提供了有趣的例子。在离核中心较远的距离处具有适当的渐近行为的球形Woods-Saxon基上的DRHB方程以完全自洽的方式描述了这些系统的光晕、变形效应和大空间扩展的贡献。对镁和氖同位素进行了研究，并给出了富中子变形弱束缚核（44）Mg的详细结果。这个核的核心是长形的，但晕有一个稍微扁圆的形状。这表明光晕轨道与核心变形的解耦。讨论了这种解耦效应发生的一般条件。
Halo phenomena in deformed nuclei are investigated within a deformed relativistic Hartree Bogoliubov (DRHB) theory. These weakly bound quantum systems present interesting examples for the study of the interdependence between the deformation of the core and the particles in the halo. Contributions of the halo, deformation effects, and large spatial extensions of these systems are described in a fully self-consistent way by the DRHB equations in a spherical Woods-Saxon basis with the proper asymptotic behavior at a large distance from the nuclear center. Magnesium and neon isotopes are studied and detailed results are presented for the deformed neutron-rich and weakly bound nucleus (44)Mg. The core of this nucleus is prolate, but the halo has a slightly oblate shape. This indicates a decoupling of the halo orbitals from the deformation of the core. The generic conditions for the occurrence of this decoupling effects are discussed.