论文标题
$^{252} $ cf和$^{258} $ no的多维势能表面的描述
Description of the multidimensional potential energy surface in fission of $^{252}$Cf and $^{258}$No
论文作者
论文摘要
核裂变的显微镜研究需要评估势能表面作为集体坐标的函数。应在合理的计算时间内完全描述表面的地形，从而在多极矩上进行合理的约束选择。我们对gogny核子核子相互作用的D1S参数化进行了自洽的Hartree-fock-Bogoliubov方法中的裂变屏障的详细分析。两种代表不同自发裂变模式的重型同位素 - $^{252} $ cf（不对称）和$^{258} $ no（bimodal） - 已选择进行分析。我们已经显示了能量表面上的复杂结构的存在，这些结构无法在二维计算中充分描述。我们分析了这种类型的计算中可能遇到的明显问题：给定的限制和各种势能表面之间的过渡的多个解决方案。我们介绍了有关如何处理这些问题的可能解决方案。
The microscopic studies on nuclear fission require the evaluation of the potential energy surface as a function of the collective coordinates. A reasonable choice of constraints on multipole moments should be made to describe the topography of the surface completely within a reasonable amount of computing time. We present a detailed analysis of fission barriers in the self-consistent Hartree-Fock-Bogoliubov approach with the D1S parametrization of the Gogny nucleon-nucleon interaction. Two heavy isotopes representing different spontaneous fission modes - $^{252}$Cf (asymmetric) and $^{258}$No (bimodal) - have been chosen for the analysis. We have shown the existence of complicated structures on the energy surface that can not be fully described in two-dimensional calculations. We analyze apparent problems that can be encountered in this type of calculations: multiple solutions for given constraints and transitions between various potential energy surfaces. We present possible solutions on how to deal with these issues.
