论文标题
$^{128,129,130} $ XE的结构通过多引用能量密度计算
Structure of $^{128,129,130}$Xe through multi-reference energy density functional calculations
论文作者
论文摘要
最近，已经从库仑激发实验的结果中计算出核$^{130} $ Xe的库马尔四极变形参数的值，这表明该Xenon同位素具有突出的三轴基态。在不同的情况下，最近有人认为，在大型强子对撞机（LHC）执行的超相关重型离子碰撞状态中粒子相关性的分析指向相邻同位素的相似结构，$^{129} $ XE。在目前的工作中，我们报告了最先进的多参考能量密度功能计算，这些计算将质子和中子数的投影以及角动量与三个同位素混合的形状混合结合在一起，$^{128,129,130} $ XE使用skyrme-type pseudpe pseudo-pseudo-pseudo-pseudo-pseudo-pseudo-pseudo-pseudo-pseudo-pseudo-peripation slymr1。探索三轴自由度，我们证明了所有三个同位素的基态都表现出非常明显的三轴结构。此外，与实验结果的比较表明，计算相当很好地重现了两个偶数质量同位素的低能激发光谱。相比之下，$^{129} $ XE的计算揭示了有效交互的一些缺陷。
Recently, values for the Kumar quadrupole deformation parameters of the nucleus $^{130}$Xe have been computed from the results of a Coulomb excitation experiment, indicating that this xenon isotope has a prominent triaxial ground state. Within a different context, it was recently argued that the analysis of particle correlations in the final states of ultra-relativistic heavy-ion collisions performed at the Large Hadron Collider (LHC) points to a similar structure for the adjacent isotope, $^{129}$Xe. In the present work, we report on state-of-the-art multi-reference energy density functional calculations that combine projection on proton and neutron number as well as angular momentum with shape mixing for the three isotopes $^{128,129,130}$Xe using the Skyrme-type pseudo-potential SLyMR1. Exploring the triaxial degree of freedom, we demonstrate that the ground states of all three isotopes display a very pronounced triaxial structure. Moreover, comparison with experimental results shows that the calculations reproduce fairly well the low-energy excitation spectrum of the two even-mass isotopes. By contrast, the calculation of $^{129}$Xe reveals some deficiencies of the effective interaction.
