Cluster-shell competition in light nuclei
Cluster-shell competition in light nuclei
复制标题
DOI：
10.1103/physrevc.70.054307
复制
发表时间：
2004-11-01
影响因子：
3.1
通讯作者：
Ikeda, K
中科院分区：
文献类型：
--
作者：
Itagaki, N;Aoyama, S;Ikeda, K
我们证明了在轻核中除了团簇模型空间外，引入类壳模型模型空间时团簇结构是溶解还是保持。虽然通过在α + α + N + N（…）基态上添加类壳模型基态，Be-8、Be-10和B-10的结合能增加了约1-2 MeV，但α - α结构是基态的主导构型。然而，α -破坏波函数在C-12中强烈混合，并且从3 - α组态中减少约6 MeV的能量是解决C-12和O-16结合能长期存在的问题的线索。改进版的反对称分子动力学（AMD），选择快照的AMD叠加（AMD triple-S），用于显示这些原子核的簇壳竞争。
We demonstrate whether the cluster structure dissolves or remains when the shell-model-like model space is introduced in addition to the cluster model space in light nuclei. Although the binding energies of Be-8, Be-10, and B-10 become larger by about 1-2 MeV by adding shell-model-like basis states to the alpha + alpha + N + N (...) basis states, the alpha-alpha structure is a dominant configuration of the ground states. However, alpha-breaking wave functions strongly mix in C-12, and the decrease of the energy from the 3alpha configuration by about 6 MeV is a clue to resolving a long-standing problem of the binding energies of C-12 and O-16. The improved version of antisymmetrized molecular dynamics (AMD), AMD superposition of selected snapshots (AMD triple-S), is used to show the cluster-shell competition of these nuclei.