1. Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
2. Atomic Weapons Establishment (AWE) Plc, Aldermaston, Reading RG7 4PR, U.K.
3. Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, Tennessee 37831, United States
4. Diamond Light Source Ltd., Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K.
5. Thomas Young Centre, University College London, Gower Street, London WC1E 6BT, U.K.
6. School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF1D 3AT, U.K.