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X-ray spectroscopy on ultrafast-decaying core-excited atomic ions

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, , Citation M Ilchen et al 2020 J. Phys.: Conf. Ser. 1412 112001 DOI 10.1088/1742-6596/1412/11/112001

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michael.meyer@xfel.eu

Author affiliations

1 European X-Ray Free-Electron Laser Facility GmbH, Holzkoppel 4, 22869 Schenefeld, Germany

2 University of Kassel, Institute of Physics, Heinrich-Plett-Str. 40, 34132 Kassel, Germany

3 University of Connecticut, Physics Department, Unit 3046 Storrs, CT 06269-3046, United States

4 Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22671 Hamburg, Germany

5 Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics, 119991 Moscow, Russia

6 Lund University, Department of Physics, Box 117, 221 00 Lund, Sweden

7 University of Hamburg, Institute of Experimental Physics, Luruper Chaussee 149, 22761 Hamburg, Germany

8 MPIK, Quantum Dynamics & Control, Saupfercheckweg 1, 69117 Heidelberg, Germany

9 Kansas State University, Dept. of Physics, 116 Cardwell Hall Manhattan, KS 66506-2601, United States

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1742-6596/1412/11/112001

Synopsis

Results from the first soft X-ray user experiment at the European XFEL on nonlinear photon-matter interaction will be presented. Angle-resolved electron time-of-flight spectroscopy employed at the AQS (Atom-ic-like Quantum Systems) endstation of the SQS (Small Quantum Systems) instrument reveals insight into the character of resonances in highly transient, core ionized neon ions, i.e. Ne+ 1s12s22p6 → Ne+* 1s02s22p6np, together with their respective relaxation dynamics. Enabled by the unique properties of the European XFEL, novel perspectives on efficient nonlinear spectroscopy will be discussed.

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10.1088/1742-6596/1412/11/112001