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@TECHREPORT{Unterberg:136118,
      author       = {Unterberg, Bernhard and Institut für Plasmaphysik
                      (Jülich) and Association EURATOM - Forschungszentrum
                      Jülich and Universität (Bochum)},
      title        = {{S}trahlungskühlung durch {V}erunreinigungen in der
                      {P}lasmarandschicht des {T}okamaks {TEXTOR} - vergleichende
                      {U}ntersuchungen zur {I}njektion von {N}eon und {S}ilizium},
      volume       = {3036},
      number       = {Juel-3036},
      address      = {Jülich},
      publisher    = {Forschungszentrum},
      reportid     = {PreJuSER-136118, Juel-3036},
      series       = {Berichte des Forschungszentrums Jülich},
      pages        = {120 S.},
      year         = {1995},
      note         = {Record converted from JUWEL: 18.07.2013},
      abstract     = {The concept of a cold radiating plasma mantle might help to
                      solve the problem of energy exhaust in a fusion reactor.
                      Line radiation of impurities localized at the boundary of
                      the bulk plasma could distribute the heating power onto the
                      whole vessel wall and avoid dangerous heat loads at the
                      plasma facing components as limiters or divertor plates.
                      Important requirements have to be fulfilled within such a
                      concept: on the one hand a stationary impurity concentration
                      at the edge on a high level, sufficient to radiate a
                      substantial fraction of the heating power and to reduce the
                      plasma temperature at the boundary and the convective heat
                      flow to the limiters or divertor plates, but on the other
                      hand a limitation of the central impurity concentration to
                      values compatible with ignition in a fusion reactor at the
                      same time. First experiments at the tokamak TEXTOR with neon
                      as the radiating impurity gave evidence for the feasibility
                      of this concept. Within this work further experiments with
                      neon and a comparison with silicon as the radiating impurity
                      have been performed. The results are discussed with the help
                      of model calculations to judge these two elements with
                      respect to their suitability for radiation cooling by
                      characterizing the mechanisms of their plasma wall
                      interaction and the properties of radiation and transport},
      cin          = {IEF-4},
      cid          = {I:(DE-Juel1)VDB812},
      shelfmark    = {PGN - Fusion technology, plasma devices},
      typ          = {PUB:(DE-HGF)29},
      url          = {https://juser.fz-juelich.de/record/136118},
}