Soft dipole resonance in 8C and its isospin symmetry with 8He
Soft dipole resonance in 8C and its isospin symmetry with 8He
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8C 中的软偶极子共振及其与 8He 的同位旋对称性
DOI：
10.1103/physrevc.107.034305
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发表时间：
2023
影响因子：
3.1
通讯作者：
Kato Kiyoshi
中科院分区：
文献类型：
--
作者：
Myo Takayuki;Kato Kiyoshi
我们研究了富质子核中的软偶极子共振，这是四个价质子对核的集体偶极振荡，并讨论了镜像核的同位旋对称性。我们采用五体团簇模型，用复数标度法得到了多体共振。在激发能为13 MeV，衰变宽度为24 MeV时，证实了它的共振性，其结构类似于软偶极子共振，如组态混合和空间性质。这些结果表明，在多质子和多中子的共同集体激发下，两核的软偶极子共振具有良好的同位旋对称性，而由于价质子的库仑排斥，两核的基态表现出不同的性质，导致对称性破缺。总而言之，同位旋对称性的外观取决于和的状态。
We investigate the soft dipole resonance in the proton-rich nucleus, which is a collective dipole oscillation of four valence protons against thecore, and discuss the isospin symmetry with the mirror nucleus. We use thefive-body cluster model and many-body resonances are obtained using the complex-scaling method. Theresonance ofis confirmed at the excitation energy of 13 MeV with a large decay width of 24 MeV, and its structure is similar to the soft dipole resonance in, such as the configuration mixing and the spatial properties. These results indicate a good isospin symmetry in the soft dipole resonances of two nuclei with a common collective excitation of multiproton and multineutron, while the ground states of two nuclei show different properties due to the Coulomb repulsion of valence protons in, leading to the symmetry breaking. In conclusion, the appearance of the isospin symmetry differs depending on the states ofand.