Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 22: Interaction with VUV and X-ray light
A 22.8: Poster
Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof
Electron-Ion Coincidence Studies on Multiphoton Ionization of Krypton — •Hannes Lindenblatt1, Kirsten Schnorr1, Sven Augustin1, Georg Schmid1, Severin Meister1, Arne Senftleben1,2, Moritz Kurka1, Artem Rudenko3, Tatiana Marchenko4, Marc Simon4, Benjamin Erk5, Rolf Treusch5, Joachim Ullrich6, Thomas Pfeifer1, Claus-Dieter Schröter1, and Robert Moshammer1 — 1Max-Planck-Institut für Kernphysik, Heidelberg — 2Universität Kassel — 3J.R. Macdonald Laboratory, Kansas State University — 4UPMC and CNRS, Paris — 5DESY, Hamburg — 6PTB, Braunschweig
For all applications of XUV and X-ray free-electron lasers (FELs), in particular imaging of single-molecules, detailed understanding of multiphoton absorption and secondary relaxation processes in those wavelength regimes is mandatory. Here, we investigate electron-ion coincidences in multiphoton ionization of krypton by 210 eV FEL pulses delivered by FLASH using a reaction microscope. The production yields of charge states up to Kr11+ are analyzed by intensity-dependent ion spectra. The involved mechanisms are studied by charge state selective electron energy spectra.