论文标题
$^{29} $ ne的单中子光环结构
One-neutron halo structure of $^{29}$Ne
论文作者
论文摘要
我们已经应用了Gamow Shell模型来计算$^{26-31} $ ne同位素的核观测值，这些同位素与单中子晕结构有关，这些原子核位于中子滴水线附近。由于多体相关性和连续耦合都在这种方法中考虑了，因此可以正确分析光环结构。我们的计算提供了$^{26-31} $ ne的良好描述，其中渐近行为对此至关重要。也已经计算了$^{26-31} $ ne的一体密度，中子均方根射线半径，以及$^{29,31} $ ne的单中性重叠函数。我们的结果支持在$^{31} $ ne中存在单中性\ textit {p} -Wave halo，已经在实验中指出。 $^{29} $ ne的基础状态也发生了类似的情况，该状态主要是\ textIt {p} -Wave Valence Neutron耦合到Inner $^{28} $ ne \ textit {core}。还考虑了$ 3/2^+$兴奋的$^{29} $ ne的兴奋状态，该状态也以\ textit {d} -Wave Valence Neutron的主导。与其$ 3/2^+$首先激发状态相比，$^{29} $ ne的基态较大半径和更扩展的波函数。目前的结果表明，$^{29} $ ne是中等质量区域中单中子\ textit {p}的好候选者。
We have applied the Gamow shell model to calculate nuclear observables of $^{26-31}$Ne isotopes pertaining to one-neutron halo structure, these nuclei being situated close to neutron drip-line. As both many-body correlations and continuum coupling are taken into account in that approach, halo structure can be analyzed properly. Our calculations provide good descriptions of $^{26-31}$Ne, where asymptotic behavior is crucial for that matter. One-body density, neutron root-mean-square radii of $^{26-31}$Ne, and one-neutron overlap functions of $^{29,31}$Ne have been calculated as well. Our results support the presence of a one-neutron \textit{p}-wave halo in $^{31}$Ne, already pointed out experimentally. A similar situation also occurs in the ground state of $^{29}$Ne, which is mainly a \textit{p}-wave valence neutron coupled to the inner $^{28}$Ne \textit{core}. The $3/2^+$ excited state of $^{29}$Ne, which is dominated by a \textit{d}-wave valence neutron, has also been considered. A larger radius and more extended wave function occur for the ground state of $^{29}$Ne when compared to its $3/2^+$ first excited state. The present results suggest that $^{29}$Ne is a good candidate for one-neutron \textit{p}-wave halo in the medium-mass region.
