Radiative and Auger cascade following the $2p$ shell vacancy creation in the Fe^2＋ ion is studied by analysing transitions among energy levels and subconfigurations. Branching ratios of the cascade are analysed and main decay mechanisms are identified for all levels of the Fe^3＋ $2p^{5}3d^6$ configuration. The study shows that ion yield strongly depends on the level the cascade starts from. The cascade produces the Fe^4＋ and Fe^5＋ ions with the highest population. The ion yields are presented for all levels of the Fe^3＋ $2p^{5}3d^6$ configuration. The time-dependent study for population of the ions demonstrates that it takes approximately $10^{-16}$ s for the Fe^4＋ ions to appear. The final states of the cascade are reached in $\sim 10^{-3}$ s. Radiative and Auger spectra produced by cascade span the energy region up to $\sim 780\mathrm{eV}$.

辐射和俄歇级联 $2p$通过分析能级和亚构型之间的跃迁，研究了Fe ²⁺离子中空位的产生。分析了级联的分支比，并确定了所有水平的Fe ^3＋的主要衰变机理 $2p^{5}3d^6$组态。研究表明，离子产率在很大程度上取决于级联反应的起始水平。级联产生的Fe ⁴⁺和Fe ⁵⁺离子的数量最多。给出了所有水平的Fe ³⁺的离子产率 $2p^{5}3d^6$组态。离子种群的时间依赖性研究表明，该过程大约需要$\mathrm{1个}{0}^{-16}$出现Fe ^4＋离子。级联的最终状态在$〜\mathrm{1个}{0}^{-3}$s。级联产生的辐射光谱和俄歇光谱横跨整个能量区域$〜780\mathrm{电子伏特}$。