1. Clarendon Laboratory, University of Oxford, Oxford, UK
2. University College, University of Oxford, Oxford, UK
3. Central Laser Facility, STFC, Rutherford Appleton Laboratory, Didcot, UK
4. AWE plc, Aldermaston, Reading, Berkshire RG7 4PR, UK
5. Los Alamos National Laboratory, MS T087, Los Alamos, NM 87545, USA
6. Lawrence Livermore National Laboratory, Livermore, CA 94550, USA