REMPI data was recorded for CH₃I and HI for the two-photon excitation region of 76,680–82,620 cm⁻¹. I⁺ signals reveal number of peaks of varying line widths and intensities. These are attributed to two-photon resonant excitation of iodine atoms I(²P_3/2) and I*(²P_1/2) to Rydberg and superexcited states followed by one-photon ionization and autoionization. Laser power dependence experiments and line intensities reveal that the photoionization of I/I* follows one-photon molecular dissociation. Quantum defect analysis and correlation inspections of line widths were applied to identify and characterize number of new, not previously observed, superexcited atomic states of ion cores ³P_0,1 and ¹D₂. Mechanisms of autoionization processes are summarized and discussed. Particularly fast autoionization processes of superexcited iodine atoms of ion core ¹D₂ are observed. Comparison of observed line widths with expected trends in n proved to be very useful in the analysis procedure and to identify state interactions.

记录了CH ₃ I和HI在76,680–82,620 cm ^-1的双光子激发区域的REMPI数据。I ⁺信号显示出线宽和强度变化的峰值数量。这些归因于碘原子I（² P _3/2）和I *（² P _1/2）的双光子共振激发。）到里德堡和超激发态，然后进行单光子电离和自电离。激光功率依赖性实验和线强度表明，I / I *的光电离遵循单光子分子解离。应用线宽的量子缺陷分析和相关检查来识别和表征离子核³ P _0,1和¹ D ₂的新的，以前未观察到的超激原子态。总结和讨论了自动电离过程的机制。观察到离子核¹ D ₂的超激发碘原子的快速自电离过程。将观察到的线宽与n中的预期趋势进行比较 被证明对分析程序和识别状态相互作用非常有用。