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@ARTICLE{Kirschner:841763,
      author       = {Kirschner, A. and Kreter, A. and Wienhold, P. and Weckmann,
                      A. and Pospieszczyk, A. and Ding, R. and Borodin, D. and
                      Brezinsek, S. and Sergienko, G. and Rubel, M. and Linsmeier,
                      Ch.},
      title        = {{M}odelling of deposition and erosion of injected {WF} 6
                      and {M}o{F} 6 in {TEXTOR}},
      journal      = {Nuclear materials and energy},
      volume       = {12},
      issn         = {2352-1791},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2018-00067},
      pages        = {564 - 568},
      year         = {2017},
      abstract     = {Tracer injection experiments in TEXTOR with MoF6 and WF6
                      lead to local deposition of about $6\%$ for Mo and about
                      $1\%$ for W relative to the injected amount of Mo and W
                      atoms. Modelling of these experiments has been done with ERO
                      applying updated data for physical sputtering. The
                      dissociation of the injected molecules has been treated in a
                      simplified manner due to the lack of dissociation rate
                      coefficients. However, with this it was possible to
                      reproduce the observed radial penetration of Mo and W atoms
                      into the plasma. The modelled local deposition efficiencies
                      are about $50\%$ for Mo and $60\%$ for W assuming typical
                      plasma parameters for the experimental conditions used. To
                      reproduce the measured deposition efficiencies an
                      enhancement factor for the erosion of deposited Mo and W has
                      to be assumed (∼10 for Mo and ∼25 for W). Due to the
                      rather low electron temperature Te of these plasma
                      conditions (Te∼15 eV at the location of injection), Mo and
                      W are mostly sputtered by impurities whereas sputtering due
                      to deuterium is negligible. A parameter study applying
                      larger electron temperature leads to increased sputtering
                      and thus to reduced local deposition efficiencies of about
                      $30\%$ for Mo and $5\%$ for W. Though, even under these
                      conditions enhanced erosion, albeit with reduced enhancement
                      factors, is needed in the modelling to obtain the small
                      measured deposition efficiencies.},
      cin          = {IEK-4},
      ddc          = {333.7},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {174 - Plasma-Wall-Interaction (POF3-174)},
      pid          = {G:(DE-HGF)POF3-174},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000417293300089},
      doi          = {10.1016/j.nme.2016.10.022},
      url          = {https://juser.fz-juelich.de/record/841763},
}