[1] EURATOM FOM, FOM Inst Plasma Phys Rijnhuizen, Nieuwegein, Netherlands
[2] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA
[3] Inst Tecnol & Nucl, P-268693 Sacavem, Portugal
[4] Inst Super Tecn, Inst Plasma & Fusao Nucl, Assoc Euratom IST, P-1049001 Lisbon, Portugal
[5] Inst Super Tecn, Dept Engenharia Mat, ICEMS, P-1049001 Lisbon, Portugal
[6] EURATOM, FZ Juelich, Inst Energy Res, D-52425 Julich, Germany