1. Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
2. Lawrence Livermore National Laboratory, Livermore, California 94550, USA
3. Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA
4. Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
5. Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
6. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
7. General Atomics, San Diego, California 92186, USA
8. AWE plc, Aldermaston, Reading RG7 4PR, United Kingdom