论文标题
高k状态下非常重的核的尺寸和形状
Sizes and shapes of very heavy nuclei in high-K states
论文作者
论文摘要
我们已经研究了具有变形的木材势势的显微镜宏观模型中的诺贝尔和卢瑟福德同位素的选定的两量和四量粒子\ mbox \ mbox {高$ k $}状态。通过阻止位于费米水平附近的单粒子状态来获得激发的核构型。它们的能量和变形是通过形状变量的四维能量最小化发现的。我们通过分析激发能的同位素依赖性，选择了\ mbox {$ k $ -isomers}的最有希望的候选者，并将我们的结果与可用的实验数据进行了比较。我们计算了四极矩的差异，并在其\ mbox {高$ k $}和基态之间的核之间充电半径，并在相邻的NO和RF同位素中发现了它们在四级Quasiparticle状态的截然不同的模式。还讨论了四极杆和六二烷变形的主要作用以及更高等级对称性的重要性。激光技术的当前发展以及在不久的将来衡量讨论效应的结果的能力是我们的研究的动机。
We have investigated shapes and sizes of selected two- and four-quasiparticle \mbox{high-$K$} states in nobelium and rutherfordium isotopes within the microscopic-macroscopic model with the deformed Woods-Saxon potential. Excited nuclear configurations were obtained by blocking single-particle states lying close to the Fermi level. Their energies and deformations were found by the four-dimensional energy minimization over shape variables. We have selected the most promising candidates for \mbox{$K$-isomers} by analyzing the isotopic dependence of excitation energies, and compared our results to available experimental data. We calculated differences in quadrupole moments and charge radii between nuclei in their \mbox{high-$K$} and ground states and found their quite different pattern for four-quasiparticle states in neighboring No and Rf isotopes. The leading role of the quadrupole and hexadecapole deformations as well as the importance of higher rank symmetries are also discussed. The current development of laser techniques and the resulting ability to measure discussed effects in the near future is the motivation of our study.
