2 α +t cluster structure in 11 B
2 α +t cluster structure in 11 B
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DOI：
10.1103/physrevc.98.054323
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发表时间：
2018-11
影响因子：
3.1
通讯作者：
Bo Zhou;M. Kimura
中科院分区：
文献类型：
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作者：
Bo Zhou;M. Kimura
用微观生成坐标方法和Brink集团波函数研究了团簇结构。通过适当选择有效相互作用的参数，计算的能谱与观测到的两个宇称的低激发能谱符合得很好。根据计算出的半径、跃迁强度和跃迁强度，提出了几种发展的团簇态。对于负宇称态，除了已知的团簇态外，还提出了和态作为发展较好的团簇态。对于正宇称态，发现在阈值附近的许多态都表现出发达团簇的特征。特别地，发现该态具有线性链状结构，这与先前的反对称化分子动力学计算一致，但与正交条件模型计算相矛盾。还发现，许多这些正宇称集群候选人具有不可忽略的等oscillator偶极跃迁强度，这需要实验证实。
Thecluster structure inis investigated by the microscopic generator coordinate method with the Brink cluster wave functions. With a proper choice of the parameters of the effective interaction, the calculated energy spectrum shows reasonable agreement with the observed low-lying spectra of both parities. On the basis of the calculated radii, and monopole andtransition strengths, several developed cluster states ofare suggested. For the negative-parity states, in addition to the well-knowncluster state, theandstates are also proposed as the well-developed cluster states. For the positive-parity states, it is found that many states around thethreshold show the feature of developed clusters. In particular, thestate is found to have a linear-chain-like structure, which is consistent with the previous antisymmetrized molecular dynamics calculation, but contradicts the orthogonality condition model calculation. It is also found that many of these positive-parity cluster candidates have non-negligible isoscalar dipole transition strengths, which require experimental confirmation.