% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Han:891409,
      author       = {Han, X. and Krämer-Flecken, A. and Windisch, T. and
                      Hirsch, M. and Fuchert, G. and Geiger, J. and Grulke, O. and
                      Liu, S. and Rahbarnia, K.},
      title        = {{E}xperimental characterization of a quasi-coherent
                      turbulent structure in the edge plasma in {W}endelstein
                      7-{X}},
      journal      = {Nuclear fusion},
      volume       = {60},
      number       = {1},
      issn         = {1741-4326},
      address      = {Vienna},
      publisher    = {IAEA},
      reportid     = {FZJ-2021-01494},
      pages        = {016011 -},
      year         = {2020},
      abstract     = {A quasi-coherent mode (QCM) near the plasma edge is
                      characterized experimentally by measuring the density
                      fluctuation via a poloidal correlation reflectometer (PCR)
                      in Wendelstein 7-X. This QCM frequency descends from
                      25 kHz near the separatrix to 10 kHz as the cutoff
                      position penetrates toward the core. A similar mode
                      structure is also observed in the spectra of electron
                      cyclotron emission edge channels and Mirnov coil signals,
                      which shows a clear correlation with respect to the PCR
                      measurement. The mode evaluation yields a range for the
                      poloidal mode number of , and for the normalized mode scale
                      , which suggest a drift type instability. The QCM structure
                      appears in the standard and narrow-mirror configurations
                      (both with the rotational transform in the boundary), but is
                      absent in the high- configuration (boundary ). The impact of
                      plasma parameters on the QCM is discussed. It is observed
                      that the QCM frequency and amplitude can be affected by the
                      edge magnetic topology and plasma parameters. The shifts
                      upward during the negative and non-stellarator-symmetric
                      control coil current scans, which may be attributed to the
                      effect of the shear, Er, and ne in the plasma edge region.},
      cin          = {IEK-4},
      ddc          = {620},
      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:000494822800005},
      doi          = {10.1088/1741-4326/ab4e75},
      url          = {https://juser.fz-juelich.de/record/891409},
}