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@ARTICLE{Potzel:202130,
      author       = {Potzel, S. and Wischmeier, M. and Bernert, M. and Dux, R.
                      and Reimold, F. and Scarabosio, A. and Brezinsek, S. and
                      Clever, M. and Huber, A. and Meigs, A. and Stamp, M.},
      title        = {{F}ormation of the high density front in the inner far
                      {SOL} at {ASDEX} {U}pgrade and {JET}},
      journal      = {Journal of nuclear materials},
      volume       = {463},
      issn         = {0022-3115},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2015-04419},
      pages        = {541 - 545},
      year         = {2015},
      abstract     = {This article presents the development of a region of high
                      electron density, being one order of magnitude larger than
                      the separatrix density, in the inner divertor of ASDEX
                      Upgrade (AUG) and JET. The high-field side high density
                      (HFSHD) occurs about 10×λq10×λq away from the separatrix
                      and about 20 cm above the X-point. To trigger the HFSHD, the
                      inner divertor has to be detached while the outer one
                      remains attached and the heating power has to be
                      sufficiently high. The HFSHD, determined independently from
                      spectroscopic and interferometric measurements, is clearly
                      correlated with neutral fluxes in the far scrape-off layer;
                      both increase with heating power. Injection of N2 into the
                      divertor private flux region suppresses the HFSHD in AUG and
                      JET. The density distribution in the divertor with and
                      without N2 seeding is consistent with the total radiation
                      and the DγDγ distribution.},
      cin          = {IEK-4},
      ddc          = {530},
      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:000358467200112},
      doi          = {10.1016/j.jnucmat.2014.12.008},
      url          = {https://juser.fz-juelich.de/record/202130},
}