Deformed two-neutron halo in B19
Deformed two-neutron halo in B19
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DOI：
10.1103/physrevc.103.054315
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发表时间：
2021-05
影响因子：
3.1
通讯作者：
Xiang-Xiang Sun-Xiang
中科院分区：
文献类型：
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作者：
Xiang-Xiang Sun-Xiang
用形变相对论Hartree-Bogoliubov连续介质理论研究了的基态性质。用密度泛函PK 1计算表明，这是一个变形的双中子晕核。通过考察单个中子能级的演化，发现由于成对作用而处于弱束缚或嵌入连续谱中的价能级含有几率幅为0.359的可激发波分量，并导致了晕的形成。强四极相关混合轨道和驱动器是扁长的。计算得到的中子核密度呈扁长形，而中子晕呈扁球形，是具有形状退耦效应的中子晕候选体。
Ground state properties ofare studied by using the deformed relativistic Hartree-Bogoliubov theory in continuum. The calculations with the density functional PK1 show thatis a deformed two-neutron () halo nucleus. By examining the evolution of single neutron levels, it is found that the valence levels, which are weakly bound or embedded in the continuum due to pairing, contain considerable-wave components with the probability amplitude of 0.359 and lead to the formation of the halo. Strong quadrupole correlations mixorbitals and driveto be prolate. The calculated density of the neutron core presents a prolate shape while the neutron halo is oblate, meaningis ahalo candidate with shape decoupling effects.