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@ARTICLE{Strm:859892,
      author       = {Ström, P. and Petersson, P. and Rubel, M. and
                      Fortuna-Zaleśna, E. and Widdowson, A. and Sergienko, G.},
      title        = {{A}nalysis of deposited layers with deuterium and impurity
                      elements on samples from the divertor of {JET} with
                      {ITER}-like wall},
      journal      = {Journal of nuclear materials},
      volume       = {516},
      issn         = {0022-3115},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2019-00709},
      pages        = {202 - 213},
      year         = {2019},
      abstract     = {Inconel-600 blocks and stainless steel covers for quartz
                      microbalance crystals from remote corners in the JET-ILW
                      divertor were studied with time-of-flight elastic recoil
                      detection analysis and nuclear reaction analysis to obtain
                      information about the areal densities and depth profiles of
                      elements present in deposited material layers. Surface
                      morphology and the composition of dust particles were
                      examined with scanning electron microscopy and
                      energy-dispersive X-ray spectroscopy. The analysed
                      components were present in JET during three ITER-like wall
                      campaigns between 2010 and 2017. Deposited layers had a
                      stratified structure, primarily made up of beryllium, carbon
                      and oxygen with varying atomic fractions of deuterium, up to
                      more than $20\%.$ The range of carbon transport from the
                      ribs of the divertor carrier was limited to a few
                      centimeters, and carbon/deuterium co-deposition was
                      indicated on the Inconel blocks. High atomic fractions of
                      deuterium were also found in almost carbon-free layers on
                      the quartz microbalance covers. Layer thicknesses up to more
                      than 1 μm were indicated, but typical values were on the
                      order of a few hundred nm. Chromium, iron and nickel
                      fractions were less than or around $1\%$ at layer surfaces
                      while increasing close to the layer-substrate interface. The
                      tungsten fraction depended on the proximity of the plasma
                      strike point to the divertor corners. Particles of tungsten,
                      molybdenum and copper with sizes less than or around 1 μm
                      were found. Nitrogen, argon and neon were present after
                      plasma edge cooling and disruption mitigation. Oxygen-18 was
                      found on component surfaces after injection, indicating
                      in-vessel oxidation. Compensation of elastic recoil
                      detection data for detection efficiency and ion-induced
                      release of deuterium during the measurement gave
                      quantitative agreement with nuclear reaction analysis, which
                      strengthens the validity of the results.},
      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:000458897100020},
      doi          = {10.1016/j.jnucmat.2018.11.027},
      url          = {https://juser.fz-juelich.de/record/859892},
}