Wouter Montfrooij was an Instrument Scientist on the MARI spectrometer at the ISIS facility of the Rutherford Appleton Laboratories (1995-1998), before taking postdoc positions at Atomic Energy of Canada, Chalk River, Ontario, Canada, at Risø National Laboratory, Roskilde, Denmark and at Oak Ridge National Laboratory, Oak Ridge TN, USA. He is now Associate Professor of Physics at the University of Missouri, Columbia MO, USA. ; Ignatz de Schepper was a postdoctoral researcher at the Rockefeller University, New York, before becoming Lecturer of Theoretical Physics, University of Utrecht, the Netherlands. He later became Head of the Neutron Scattering Group, Interfaculty Reactor Institute, Technical University Delft, Delft, the Netherlands. He is now Professor Emeritus of Radiation Physics.
