1. National Institute for Fusion Science Nagoya 464-01, Japan
2. Niigata University, Nugata 950-21, Japan
3. Institute for Future Technology Tokyo 102, Japan
4. University of Illinois Urbana, Illinois 61801
5. Osaka University, Suita 565, Japan
6. Kyoto University, Uji 611, Japan
7. Himeji Institute of Technology Himeji 671-22, Japan
8. STI Optronics, Inc. Bellevue, Washington 98004
9. Los Alamos National Laboratory Los Alamos, New Mexico 87545