从非定域聚类概念研究${}^9$ Be
Investigation of ${}^9$Be from nonlocalized clustering concept
摘要：
非定域成簇是自共轭核的一个新概念，本文将其推广到N{ \not =}Z核${}^9$ Be的研究中.基于集装箱图，提出了一种改进的THSR（Tohsaki-Horiuchi-Schuck-Röpke）波函数。结果表明，所构造的负宇称THSR波函数非常适合描述${}^9$ Be的团簇态.也就是说，在${}^9$ Be中，非定域聚簇占主导地位。计算的结合能和${}^9$ Be的半径与其他模型的计算值和实验值一致。发现${}^9$ Be的$3/2^-$转动带的THSR波函数和Brink+GCM波函数的平方重叠接近96%。此外，通过显示${}^9$ Be的基态的密度分布，通过使用该THSR波函数自然地再现了π轨道结构。
英文摘要：
The nonlocalized aspect of clustering, which is a new concept for self-conjugate nuclei, is extended for the investigation of the N{\not=}Z nucleus ${}^9$Be. A modified version of the THSR (Tohsaki-Horiuchi-Schuck-Röpke) wave function is introduced based on the container picture. It is found that the constructed negative-parity THSR wave function is very suitable for describing the cluster states of ${}^9$Be. Namely the nonlocalized clustering is shown to prevail in ${}^9$Be. The calculated binding energy and radius of ${}^9$Be are consistent with calculations in other models and with experimental values. The squared overlaps between the THSR wave function and the Brink+GCM wave function for the $3/2^-$ rotational band of ${}^9$Be are found to be near 96%. Furthermore, by showing the density distribution of the ground state of ${}^9$Be, the π-orbit structure is naturally reproduced by using this THSR wave function.
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