Five-body resonances of 8C using the complex scaling method
Five-body resonances of 8C using the complex scaling method
复制标题
DOI：
10.1103/physrevc.85.034338
复制
发表时间：
2012-03
影响因子：
3.1
通讯作者：
T. Myo;Y. Kikuchi;K. Katō
中科院分区：
文献类型：
--
作者：
T. Myo;Y. Kikuchi;K. Katō
在α + p + p + p + p团簇模型下，研究了丰质子核8 Ci的共振谱.在正确的边界条件下，用复标度法将多体共振作为伽莫夫态处理。我们首次得到了8 C的基态为五体共振态，它主要具有亚闭（p ~（3/2））~ 4组态，能量和衰变宽度与最近的实验结果一致.我们预测了第二个0 +态的激发能为5.6 MeV，对应于基态的2 p2 h态。我们计算了8 C的四个价态质子在8 C中的占据数以及8 C的两个0 +态质子对数的J π分布。基态包含大量的2 +质子对部分，而激发态0 +几乎由两个0 +质子对组成，这可以从（p3/2）2（p1/2）2构型来理解。我们还讨论了α+四核子图象下8 Ca和8He之间的镜像对称性.结果表明，由于两个原子核的组态性质，0 +态很好地保持了镜像对称性。
We study the resonance spectroscopy of the proton-rich nucleus 8 Ci n theα + p + p + p + p cluster model. Many-body resonances are treated on the correct boundary condition as the Gamow states using the complex scaling method. We obtain the ground state of 8 C as a five-body resonance for the first time, which has dominantly the subclosed (p3/2) 4 configuration and agrees with the recent experiment for energy and decay width. We predict the second 0 + state with the excitation energy of 5.6 MeV, which corresponds to the 2p2h state from the ground state. We evaluate the occupation numbers of four valence-protons in the 8 C states and also the J π distribution of proton-pair numbers of the two 0 + states of 8 C. The ground state involves a large amount of the 2 + proton-pair fraction, while the excited 0 + state almost consists of two of the 0 + proton pairs, which can be understood from the (p3/2) 2 (p1/2) 2 configuration. We also discuss the mirror symmetry between 8 Ca nd 8 He with an α+four nucleon picture. It is found that the 0 + states retain the mirror symmetry well for the configuration properties of two nuclei.