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@ARTICLE{Kirschner:861555,
      author       = {Kirschner, A. and Brezinsek, S. and Huber, Alexander and
                      Meigs, A. and Sergienko, G. and Tskhakaya, D. and Borodin,
                      D. and Groth, M. and Jachmich, S. and Romazanov, J. and
                      Wiesen, S. and Linsmeier, Ch.},
      title        = {{M}odelling of tungsten erosion and deposition in the
                      divertor of {JET}-{ILW} in comparison to experimental
                      findings},
      journal      = {Nuclear materials and energy},
      volume       = {18},
      issn         = {2352-1791},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2019-02006},
      pages        = {239 - 244},
      year         = {2019},
      abstract     = {The erosion, transport and deposition of tungsten in the
                      outer divertor of JET-ILW has been studied for an H-Mode
                      discharge with low frequency ELMs. For this specific case
                      with an inter-ELM electron temperature at the strike point
                      of about 20 eV, tungsten sputtering between ELMs is almost
                      exclusively due to beryllium impurity and self-sputtering.
                      However, during ELMs tungsten sputtering due to deuterium
                      becomes important and even dominates. The amount of
                      simulated local deposition of tungsten relative to the
                      amount of sputtered tungsten in between ELMs is very high
                      and reaches values of $99\%$ for an electron density of 5E13
                      cm−3 at the strike point and electron temperatures between
                      10 and 30 eV. Smaller deposition values are simulated with
                      reduced electron density. The direction of the B-field
                      significantly influences the local deposition and leads to a
                      reduction if the E × B drift directs towards the
                      scrape-off-layer. Also, the thermal force can reduce the
                      tungsten deposition, however, an ion temperature gradient of
                      about 0.1 eV/mm or larger is needed for a significant
                      effect. The tungsten deposition simulated during ELMs
                      reaches values of about $98\%$ assuming ELM parameters
                      according to free-streaming model. The measured WI emission
                      profiles in between and within ELMs have been reproduced by
                      the simulation. The contribution to the overall net tungsten
                      erosion during ELMs is about 5 times larger than the one in
                      between ELMs for the studied case. However, this is due to
                      the rather low electron temperature in between ELMs, which
                      leads to deuterium impact energies below the sputtering
                      threshold for tungsten.},
      cin          = {IEK-4},
      ddc          = {624},
      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:000460107500041},
      doi          = {10.1016/j.nme.2019.01.004},
      url          = {https://juser.fz-juelich.de/record/861555},
}