Towards time resolved core level photoelectron spectroscopy with femtosecond x-ray free-electron lasers
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10
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New Journal of Physics
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College Park, MD : Institute of Physics Publishing
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Abstract
We have performed core level photoelectron spectroscopy on a W(110) single crystal with femtosecond XUV pulses from the free-electron laser at Hamburg (FLASH). We demonstrate experimentally and through theoretical modelling that for a suitable range of photon fluences per pulse, time-resolved photoemission experiments on solid surfaces are possible. Using FLASH pulses in combination with a synchronized optical laser, we have performed femtosecond time-resolved core-level photoelectron spectroscopy and observed sideband formation on the W 4f lines indicating a cross correlation between femtosecond optical and XUV pulses. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
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Keywords
Electron spectroscopy, Electrons, Emission spectroscopy, Laser pulses, Lasers, Molecular orbitals, Molecular spectroscopy, Optical correlation, Photoelectricity, Photoelectron spectroscopy, Photoelectrons, Photoionization, Photons, Pulsed laser applications, Pulsed laser deposition, Single crystal surfaces, Single crystals, Spectrum analysis, Tungsten, X ray lasers, Core-level photoelectron spectroscopy, Cross correlations, Extreme ultraviolet (XUV) pulses, Femto seconds, Femtosecond time-resolved, Femtosecond x rays, Fluences, Free electron laser (FEL), Optical (PET) (OPET), solid surfaces, Time-resolved, Time-resolved photoemission (TRPE), X ray photoelectron spectroscopy
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CC BY-NC-SA 3.0 Unported