$^{11}$ B基态团簇结构的持久性
Persistence of cluster structure in the ground state of $^{11}$B
摘要：
讨论了$^{11}$ B的基态下$α+α+t$团簇构型的持续性。从$^{12}$ C的激发态发射的$α$粒子可用于癌症治疗，其中通过临床质子束在$^{11}$ B靶上产生簇状态。虽然截面已经得到，但对于原子核结构侧，$^{11}$ B的基态是否包含簇态的种子是关键问题，因为簇结构可能被自旋-轨道相互作用冲洗掉，所述自旋-轨道相互作用已知为破坏$α$簇的驱动力。为了这个目的，除了与集群配置的基态，我们包括他们的破碎效果采用反对称准集群模型（AQCM）。包含的破缺效应的$α+α+t$集群结构被发现有助于降低基态能量约2兆电子伏。假设$^{12}$ C的典型三- $α$团簇态为等边三角形构型，其相对距离为$\approx 4$ fm，当质子接近时，发现$^{11}$ B的基态与该态有一定的平方重叠.第三个$3/2^{-}$态在理论和实验上都被认为是一个团簇态，并且我们证实了团簇的发展。
英文摘要：
The persistence of $α+α+t$ cluster configuration in the ground state of $^{11}$B is discussed. The $α$ particles emitted from excited states of $^{12}$C could be utilized for cancer treatment, where the cluster states are created by a clinical proton beam on the $^{11}$B target. Although the cross section has been already available, for the nuclear structure side, whether the ground state of $^{11}$B contains the seeds of the cluster states is a crucial question, since the cluster structure may be washed out by the spin-orbit interaction, which has been known as a driving force to break the $α$ clusters. For this purpose, in addition to the basis states with cluster configurations, we include their breaking effects by employing the antisymmetrized quasi cluster model (AQCM). The inclusion of the breaking effect of $α+α+t$ cluster structure is found to contribute to the lowering of the ground-state energy by about 2 MeV. Assuming the typical three-$α$ cluster state of $^{12}$C as an equilateral triangular configuration with the relative distances of $\approx 4$ fm, the ground state of $^{11}$B is found to have a certain squared overlap with such state when a proton approaches. The third $3/2^{-}$ state has been suggested as a cluster state both theoretically and experimentally, and we confirmed the well-developed clustering.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
