The photoionization cross-section of an atom trapped inside a fullerene anion in the near-threshold region is dominated by the Coulomb confinement resonances. These prominent structures facilitate the possibility of an enhanced spin–orbit interaction activated interchannel coupling (SOIAIC) leading to significant modifications of the photoionization parameters even for low-Z confined atomic systems. The existence of such confinement enhanced SOIAIC structures are demonstrated for the relativistically split 2p ionization channels of Ar trapped inside fullerene anion. Dramatic modifications are observed not only in the cross-sections but also in the angular distributions, and relative phases between the degenerate channels present. Similar structures are found for the case of confined Kr as well. A detailed analysis of these interesting features is carried out which showed the importance of correlation and relativistic effects on the photoionization dynamics of confined atomic systems.

在近阈值区域被困在富勒烯阴离子内的原子的光电离截面受库仑限制共振支配。这些突出的结构促进了增强的自旋轨道相互作用激活通道间耦合（SOIAIC）的可能性，即使对于低Z受限原子系统。对于捕获在富勒烯阴离子内的 Ar 的相对分裂 2p 电离通道，证明了这种限制增强的 SOIAIC 结构的存在。不仅在横截面中而且在角度分布和存在的简并通道之间的相对相位中都观察到了显着的改变。对于受限 Kr 的情况也发现了类似的结构。对这些有趣的特征进行了详细分析，显示了相关性和相对论效应对受限原子系统的光电离动力学的重要性。