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利用同位旋相关的量子分子动力学(IQMD)对中子晕核,8He和10He引起核反应中重要的同位旋效应和松散的中子晕结构影响的平均特征进行了研究.因为IQMD中的互作用势和介质中核子-核子碰撞截面灵敏地依赖于碰撞系统的密度分布.而扩展的中子晕密度分布包含了中子晕核的同位旋效应和松散的中子晕结构的平均特征,从而将这些信息通过动力学碰撞带入到反应机理中.为了清楚地鉴别中子晕核带入反应机理重要的同位旋效应和松散中子晕结构的影响,通过比较中子晕核和相等质量稳定弹核在相同入射道条件下,所得物理观测量之间的差别加以确定.计算结果确实发现具有初始晕核信息的中子扩展密度分布将重要的同位旋效应和松散中子晕结构带入到各种物理观测量中.例如与相等质量稳定相比,中子晕核的晕特征引起了原子核阻止的降低;并明显地增加了核子发射中子-质子比和同位旋分馏比.
The isometropic-related quantum-molecular dynamics (IQMD) is used to study the average characteristics of the effects of the neutron nuclei, 8He, and 10He on the important isospin effects and loose neutron halo structures in nuclear reactions. Because the interaction in IQMD The potential and the medium-nuclear collision cross section in a medium are sensitively dependent on the density distribution of the collision system, while the extended neutron halo density distribution contains the isospin effect of the neutron corona nuclei and the average characteristic of the loose neutron corona structure, This information was brought into the reaction mechanism by kinetic collisions.In order to clearly identify the effect of the neutron nucleus nuclei brought into the important isospin effect of reaction mechanism and the effect of loose neutron halo structure, by comparing the neutron nucleus and the equivalent mass stable bomb The differences between the physical observations obtained under the same incident conditions were determined and the results do show that the neutron spreading density distribution with initial halo nucleus information has brought important isospin effects and loose neutron halo structures into each For example, the halo feature of a neutron halo nucleus causes a decrease in nuclear resistance compared to the same mass stability and significantly increases the emission of nuclei Sub - proton-fractionation and parity ratio.