We used a split-mirror setup attached to a reaction microscope at the free-electron laser in Hamburg (FLASH) to perform an XUV-pump-XUV-probe experiment by tracing the ultrafast nuclear wave-packet motion in the D2 +(1sσg) with <10 fs time resolution. Comparison with time-dependent calculations shows excellent agreement with the measured vibrational period of 22±4 fs in D2+, points to the importance of accurately knowing the internuclear distance-dependent ionization probability, and paves the way to control sequential and nonsequential two-photon double-ionization contributions.
"Investigating Two-Photon Double Ionization of D2 by XUV-Pump-XUV-Probe Experiments," Physical Review A - Atomic, Molecular, and Optical Physics, vol. 81, no. 5, pp. 051402-1-051402-4, American Physical Society (APS), May 2010.
The definitive version is available at https://doi.org/10.1103/PhysRevA.81.051402
Keywords and Phrases
Internuclear distances; Ionization probabilities; Nonsequential; Reaction microscopes; Time resolution; Time-dependent; Two photon; Two-photon double ionization; Ultra-fast; Wave-packet motion; Free electron lasers; Mirrors; Particle detectors; Photons; Probes; Pumping (laser); Pumps; Photoionization
International Standard Serial Number (ISSN)
Article - Journal
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