1. Department of Physics and Astronomy, Vrije Universiteit, Amsterdam 1081 HV, The Netherlands
2. Department of Biophysical Organic Chemistry, Leiden Institute of
Chemistry, Gorlaeus Laboratories, Leiden University, Leiden 2300 RA, The Netherlands
3. ELI-Beamlines, Institute of Physics, Na Slovance 2, 182 21 Praha 8, Czech Republic
4. Department of Biochemistry, Radboud University Medical Center, Nijmegen 6500 HB, The Netherlands