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@ARTICLE{Drews:904044,
      author       = {Drews, P. and Dittmar, T. and Killer, C. and Winters, V.
                      and Kirschner, A. and Brezinsek, S. and Xu, Shuai and Wang,
                      E. and Jakubowski, M. and Brunner, K. J. and Knauer, J. and
                      Grulke, O. and Höschen, D. and Knieps, A. and Nicolai, D.
                      and Neubauer, O. and Satheeswaran, G. and Hirsch, M. and
                      Höfel, U. and Liang, Yunfeng},
      title        = {{E}ffectiveness of local methane and hydrogen injection
                      into the scrape-off layer of {W}7-{X} by means of the
                      multi-purpose manipulator},
      journal      = {Fusion engineering and design},
      volume       = {173},
      issn         = {0920-3796},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2021-05614},
      pages        = {112786 -},
      year         = {2021},
      abstract     = {The Multi-Purpose-Manipulator (MPM) situated at the
                      outboard mid-plane is a versatile carrier system for
                      diagnostic probes at Wendelstein 7-X (W7-X). It is able to
                      probe into the last scrape-off (SOL) layer close to the last
                      closed flux surface. The manipulator is also has the
                      capability to puff gas for well-localized fueling/impurity
                      seeding into the SOL. In the previous operational campaign
                      of OP 1.2a and 1.2b both hydrogen and methane were injected
                      from the manipulator mounted probes. The effect of hydrogen
                      puffing on the main plasma was observed to be much stronger
                      than that of the methane puffing. This difference is related
                      to the difference in ionization lengths between the two gas
                      species. To support this assumption a puffing of a similar
                      amount of methane and hydrogen was modelled with ERO.},
      cin          = {IEK-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
      pid          = {G:(DE-HGF)POF4-134},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000704376200006},
      doi          = {10.1016/j.fusengdes.2021.112786},
      url          = {https://juser.fz-juelich.de/record/904044},
}