Evolution of radiation power profiles in ASDEX H-mode discharges
Creators
- Mueller, E.R.1
- Janeschitz, G.1
- Smeulders, P.1
- Fussmann, G.2
- Kornherr, M.2
- Mast, K.F.2
- Becker, G.2
- Bosch, H.S.2
- Brocken, H.2
- Eberhagen, A.2
- Gehre, O.2
- Gernhardt, J.2
- Gierke, G. v.2
- Glock, E.2
- Gruber, O.2
- Haas, G.2
- Hofmann, J.2
- Karger, F.2
- Klueber, O.2
- Lackner, K.2
- Lenoci, M.2
- Lisitano, G.2
- Mayer, H.M.2
- McCormick, K.2
- Meisel, D.2
- Mertens, V.2
- Murmann, H.2
- Niedermeyer, H.2
- Poschenrieder, W.2
- Rapp, H.2
- Riedler, H.2
- Roehr, H.2
- Roth, J.2
- Schneider, F.2
- Setzensack, C.2
- Siller, G.2
- Soeldner, F.X.2
- Speth, K.H.2
- Steuer, K.H.2
- Vollmer, O.2
- Wagner, F.2
- Zasche, D.2
- Izvozchikov, A.3
- Keilhacker, M.1
- Pietrzyk, A.4
- Ryter, F.5
- 1. Commission of the European Communities, Abingdon (UK). JET Joint Undertaking
- 2. Association Euratom-Max-Planck-Institut fuer Plasmaphysik, Garching (Germany, F.R.)
- 3. AN SSSR, Leningrad
- 4. Seattle Univ., WA (USA)
- 5. CEA Centre d'Etudes Nucleaires de Grenoble, 38 (France)
Description
The paper compares the impurity radiation behaviour of two types of H-mode discharges. In the normal H-mode that reaches a quasi-stationary state the energy (and particle) losses within the outer plasma half-radius are characterized by the repetitive burst-like exhaust into the divertor and constantly moderate radiation power losses. In contrast, the burst-free variant of the H-mode with superior confinement properties is dominated by radiation losses growing continuously up to 100% of the heating power. The time evolution of the impurity concentration and the associated radiation losses at the plasma centre is hardly influenced by the kind of H-mode. If the concentration of medium-heavy metals in the burst-dominated H-mode plasma is raised to sufficiently high values, e.g. by the accumulation of intrinsic iron, the burst-free (or burst-deficient) H-mode is triggered which after a new accumulation period usually ends by a radiation collapse. (orig.)
Additional details
Publishing Information
- Imprint Title
- ASDEX papers at the 13th European conference on controlled fusion and plasma physics
- Imprint Pagination
- 149 p.
- Journal Page Range
- p. 124-127.
- Report number
- IPP--III/110
Conference
- Title
- 13. European conference on controlled fusion and plasma heating.
- Dates
- 14-18 Apr 1986.
- Place
- Schliersee (Germany, F.R.).
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 18011377
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ASDEX TOKAMAK; BUILDUP; IMPURITIES; IRON IONS; QUANTITY RATIO; SOFT X RADIATION; ULTRAVIOLET RADIATION
- Descriptors DEC
- ATOMIC IONS; CHARGED PARTICLES; CLOSED PLASMA DEVICES; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; IONS; RADIATIONS; THERMONUCLEAR DEVICES; TOKAMAK DEVICES; X RADIATION