1. Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
2. Atomic Weapons Establishment (AWE) Plc, Aldermaston, Reading, Berkshire RG7 4PR, United Kingdom
3. Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, Tennessee 37831, USA
4. Diamond Light Source Ltd., Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
5. School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom