Ultrafast Relaxation Dynamics of Highly-excited States in N_2 Molecules Excited by Femtosecond XUV Pulses

摘要

We used velocity-map-imaging to measure electronic and nuclear dynamics in N_2 molecules excited by a train of attosecond pulses. A time-to-space mapping of autoionization channel is demonstrated. It is found that the autoionization becomes energetically allowed when the two nuclei are still very close (~3 ?) and that it can be coherently manipulated by a strong femtosecond infrared pulse.