CO₂ single-photon double photoionization, Coulomb explosion, and dissociative ionization are studied with ultrafast extreme-ultraviolet pump and time-delayed near-infrared probe pulses. Kinetic energy release and momentum correlations for the two-body CO⁺ + O⁺ and three-body O⁺ + C⁺ + O fragmentation products are determined by 3D coincidence fragment imaging. The transient enhancement of the ratio of two-body vs three-body Coulomb explosion events and the time dependence of low and high kinetic energy release dissociation events are discussed in terms of dissociative ionization and Coulomb explosion dynamics.

中文翻译：

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时间分辨的CO2的解离电离和双光电离

利用超快极紫外泵和延时近红外探测脉冲研究了CO ₂单光子双光电离，库仑爆炸和离解电离。两体CO ⁺ + O ⁺和三体O ⁺ + C ⁺ + O裂解产物的动能释放和动量相关性通过3D一致碎片成像确定。从解离电离和库仑爆炸动力学的角度讨论了两体与三体库仑爆炸事件之比的瞬态增强以及低动能和高动能释放解离事件的时间依赖性。