1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
2. Nevada National Security Site, Special Technologies Laboratory, Santa Barbara, California 93111, USA
3. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
4. Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
5. General Atomics, San Diego, California 92186, USA