1Institut für Kernphysik, J. W. Goethe Universität, Max-von-Laue-Str. 1, 60438 Frankfurt, Germany
2Departamento de Química, Universidad Autónoma de Madrid, 28049 Madrid, Spain
3Universität Kassel, Heinr.-Plett-Strasse 40, 34132 Kassel, Germany
4Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
5FS-PE, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
6FS-FLASH-D, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
7Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
8Department of Physics, University of Nevada Reno, 1664 N. Virginia Street, Reno, NV 89557 USA
9Department of Theoretical Physics, Saratov State University, 83 Astrakhanskaya, Saratov, 410012 Russia
10Research School of Physical Sciences, The Australian National University, Canberra, ACT 0200 Australia
11Instituto Madrileo de Estudios Avanzados en Nanociencia, 28049 Madrid, Spain
12Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
13Present Address: Department of Physics and CREOL College of Optics & Photonics, University of Central Florida, Orlando, FL 32816 USA
© The Author(s) 2018
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