Investigating Two-Photon Double Ionization of D₂ by XUV-Pump / XUV-Probe Experiments at FLASH
Using a novel split-mirror set-up attached to a Reaction Microscope at the Free electron LASer in Hamburg (FLASH) we demonstrate an XUV-pump - XUV-probe (ħω - 38 eV) experiment by tracing the ultra-fast nuclear wave-packet motion in the D2+(1sσg-state) with < 10fs time resolution. Comparison with time-dependent calculations yields excellent agreement with the measured vibrational period of 22±4 fs in D2+, points to the importance of the inter-nuclear distance dependent ionization probability and paves the way to control sequential and non-sequential two-photon double ionization contributions.
"Investigating Two-Photon Double Ionization of D₂ by XUV-Pump / XUV-Probe Experiments at FLASH," Optics InfoBase Conference Papers, The Optical Society (OSA), Jul 2010.
International Conference on Ultrafast Phenomena (2010: Jul. 18-23, Snowmass Village, CO)
Keywords and Phrases
FEL; X-ray laser; AMO; Reaction microscopes; Two-photon double ionization; Ultra-fast; Wave-packet motion, Experiments; Free electron lasers; Probes; Ultrafast phenomena, Photoionization
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01 Jul 2010