Wagner, F.Field, A.R.Fussmann, G.Hofmann, J.V.Manso, M.E.Vollmer, O.Matias, José2014-01-072014-01-071990Wagner, F.;Field, A.R., Fussmann, G.; Hofmann, J.V.; Manso, M.E.; Vollmer, O.; Matias, José (1990). Recent results of H-mode studies on asdex. In 13th International Conference on Plasma Physics and Controlled Nuclear Fusion. Washington D.C. Estados Unidos da América. p.277-290http://hdl.handle.net/10198/9098In a comparative study of various confinement regimes the H-mode demonstrated the best performance. Confinement enhancement factors (above ITER 89-P L-mode scaling) in the range of 1.6 fH 2.8 have been achieved with values depending on the divertor configuration, the wall condition, ELM behaviour and the plasma ion spicies. Long-pulse H-phases, withELMs, of up to 3.5s with constant confinement time, recycling and impurity characteristics are archived. H* -mode operation is possible without a loss of current scaling at qa values as low as 2.2. The B-limit is the same with and without ELMs. Murakami parameters are similar in H-and L-modes.engconference object