1. Lawrence Livermore National Laboratory, Livermore, California 94550, USA
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
3. General Atomics, San Diego, California 92121, USA
4. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
5. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
6. AWE Aldermaston, Reading, Berkshire RG7 4PR, United Kingdom