论文标题
张量力对量子壳效应的影响
Impact of tensor force on quantum shell effects in quasifission reactions
论文作者
论文摘要
量子壳效应驱动多体量化系统及其相互作用的许多方面。其中包括阻碍超元素（SHE）搜索中化合物核形成的准排放反应。排序中的片段产生受壳效应的影响，这是微观动力学的非平凡表现，阻碍了复合系统的完整平衡以形成化合物核。在这封信中，我们使用微观依赖性的Hartree-Fock（TDHF）理论研究48CA+249BK碰撞来研究有效核苷核子相互作用的张量成分的影响。结果表明，张紧力的包含会导致球形壳效应变得更加突出，尤其是对于中子数量的产量，其峰正好在魔术数n = 126。这表明张量力在核反应中动态壳的演化中起着令人信服的作用，影响球形和变形的壳外壳之间的竞争。
Quantum shell effects drive many aspects of many-body quantal systems and their interactions. Among these are the quasifission reactions that impede the formation of a compound nucleus in superheavy element (SHE) searches. Fragment production in quasifission is influenced by shell effects as a nontrivial manifestation of microscopic dynamics hindering the full equilibration of the composite system to form the compound nucleus. In this Letter, we use the microscopic time-dependent Hartree-Fock (TDHF) theory to study 48Ca+249Bk collisions to investigate the influence of the tensor component of the effective nucleon-nucleon interaction. The results show that the inclusion of the tensor force causes the spherical shell effect to become more prominent, particularly for the neutron number yield whose peak is exactly at magic number N = 126. This suggests that the tensor force plays a compelling role in the evolution of dynamical shell effects in nuclear reactions, influencing the competition between spherical and deformed shell gaps.
