1. Lawrence Livermore National Laboratory, Livermore, California 94550
2. University of California, San Diego, California 92093
3. General Atomics, P.O. Box 85608, San Diego, California 92186-5608
4. University of Toronto, Toronto, Ontario M3H 5T6, Canada
5. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
6. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543