1. Henry Royce Institute, Photon Science Institute, Department of Materials, School of Natural Sciences, The University of Manchester, Manchester, M13 9PL, UK
2. Henry Royce Institute, Photon Science Institute, Department of Physics and Astronomy, School of Natural Sciences, The University of Manchester, Manchester, M13 9PL, UK
3. Department of Computer Science, School of Engineering, The University of Manchester, Manchester, M13 9PL, UK
4. Surface Technologies, Chemical and Biological Sciences Department, National Physical Laboratory, Hampton Road, Teddington, TW11 0LW, UK
5. The Nuclear Graphite Research Group, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
6. Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
7. Rolls Royce PLC, London, UK