Alpha-Clustering and Alpha Condensate in Nuclei

α粒子凝聚是原子核中的一种新状态。在^&lt；16&gt；O、^&lt；11&gt；B和^&lt；13&gt；C中从理论上探讨了它们存在的可能性，发现它们分别出现在4α、2α+Triton和3α+中子裂解阈值附近。等标量单极跃迁强度对于寻找轻核团簇态是非常有用的，我们已经阐明了为什么团簇态通过等标量单极跃迁从类平均场基态相对较强地填充的机制。

Alpha-particle condensate is a novel state in nuclei. The possibility of their existences has been theoretically explored in ^<16> O,^<11> B, and ^<13> C. It was found that they appear around 4alpha, 2alpha+triton, and 3alpha+neutron breakup thresholds, respectively. Isoscalar monopole transition strengths are very useful to search for cluster states in light nuclei, and we have clarified the mechanism of why the cluster states are relatively strongly populated from the mean-field-like ground state through the isoscalr monopole transition.