1. Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK
2. Rutherford Appleton Laboratory, ISIS Neutron and Muon Source, Didcot, Oxfordshire, OX11 0QX, UK
3. School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK