1. Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA
2. Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544, USA
3. University of Rochester, Rochester, New York 14627, USA
4. Lawrence Livermore National Laboratory, Livermore, California 94550, USA
5. University of Michigan, Ann Arbor, Michigan 48109, USA
6. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA