Presented here are internal conversion coefficients (ICCs) for nuclear transitions of low $\gamma$-ray energies from 0.1 keV to 1 keV in elements with $10\le Z\le 118$. The low-energy nuclear transitions attract significant interest since the novel experimental technique and methods make it possible to study the transitions as well as to discover new low-lying isomers. Our ICC calculations are shown to be in excellent agreement with experimental data for the fairly low-energy nuclear transitions. The calculations are based on the Dirac–Fock method. The vacancy in the atomic shell from which an electron has been emitted is taken into account in the framework of the frozen core approximation. Experimental binding energies are used for elements $Z\le 95$. Theoretical binding energies obtained in a good approximation are used for $Z\ge 96$. Peculiarities of the ICC behavior at low energies are considered. The resonance-like structure of ICC and the drastic decrease in magnitude as the energy increases are demonstrated to be responsible for a pronounced dependence of ICC on theoretical assumptions underlying the calculations. We discuss the influence on the low-energy ICCs of the exact taking account the exchange interaction between electrons, the inclusion of the vacancy after conversion, and a credible choice of the binding energy.

这里介绍的是低核跃迁的内部转换系数 (ICC) $\gamma$-射线能量从 0.1  keV 到 1  keV 的元素$10\le Z\le 118$. 低能核跃迁引起了极大的兴趣，因为新的实验技术和方法使研究跃迁以及发现新的低位异构体成为可能。我们的 ICC 计算结果与相当低能核跃迁的实验数据非常吻合。计算基于 Dirac-Fock 方法。在冻结核近似的框架中考虑了发射电子的原子壳中的空位。实验结合能用于元素$Z\le 95$. 以很好的近似值获得的理论结合能用于$Z\ge 96$. 考虑了低能量下 ICC 行为的特性。ICC 的共振状结构和随着能量增加而幅度的急剧下降被证明是 ICC 对计算基础理论假设的显着依赖性的原因。我们讨论了精确考虑电子之间的交换相互作用、转换后空位的包含以及结合能的可信选择对低能 ICC 的影响。