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Finding plasma discharge conditions with favourable confinement properties and understanding the basis of confinement improvement are among the most challenging topics in fusion research. A variety of enhanced confinement modes have already been discovered in stellarators and tokamaks. This paper reports discharges with the longest confinement times observed in the stellarator W7-AS. The objective is to characterize these discharges, to identify the critical parameters and to investigate the physical mechanism leading to confinement improvement.

Additional information

Authors: STROTH U ET AL, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Article: Plasma Physics and Controlled Fusion, Vol. 40 (1998) pp. 1551-1565
Record Number: 199811414 / Last updated on: 1998-11-10
Original language: en
Available languages: en