Prefer a chat interface with context about you and your work?
Multiple ionization of argon via multi-XUV-photon absorption induced by 20-GW high-order harmonic laser pulses
We report the observation of multiple ionization of argon through multi-XUV-photon absorption induced by an unprecedentedly powerful laser driven high-order harmonic generation source. Comparing the measured intensity dependence of the yield of the different argon charge states with numerical calculations we can infer the different channels---direct and sequential---underlying the interaction. …