1. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
2. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
3. Lawrence Livermore National Laboratory, Livermore, California 94550, USA
4. Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
5. General Atomics, San Diego, California 92186, USA