1. Lawrence Livermore National Laboratory, Livermore, California 94551
2. General Atomics, San Diego, California 92186
3. Department of Physics and Astronomy, UCLA, Los Angeles, California 90095-1547
4. Centre de Recherches en Physique des Plasmas (CRPP), Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
5. University of Maryland, College Park, Maryland 20742
6. Department of Mechanical and Aerospace Engineering, UCSD, San Diego, California 92093
7. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08536
8. Max-Planck Institut für Plasmaphysik, D-85748 Garching, Germany