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@ARTICLE{Koslowski:850780,
      author       = {Koslowski, H. R. and Bhattacharyya, S. R. and Hansen, P.
                      and Linsmeier, Ch. and Rasiński, M. and Ström, P.},
      title        = {{T}emperature-dependent in-situ {LEIS} measurement of {W}
                      surface enrichment by 250 e{V} {D} sputtering of {EUROFER}},
      journal      = {Nuclear materials and energy},
      volume       = {16},
      issn         = {2352-1791},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2018-04554},
      pages        = {181 - 190},
      year         = {2018},
      abstract     = {Tungsten surface enrichment of EUROFER steel by 250 eV
                      deuterium sputtering is in-situ measured using low energy
                      He$^{+}$ ion scattering spectroscopy. The samples are
                      irradiated at various temperatures between 300 K and 800 K
                      with a deuterium atom flux of 2e18 m$^{-2}$s$^{-1}$ and
                      maximum fluence up to 1.1e23 m$^{-2}$. The measurements at
                      room temperature show a clear increase of tungsten surface
                      density, but already at 520 K the observed enrichment is
                      only half as large. At a temperature of 800 K no tungsten
                      surface enrichment is detectable. The obtained data allows
                      to determine an upper limit of 1.6 eV for the diffusion
                      activation energy of tungsten in EUROFER.},
      cin          = {IEK-4},
      ddc          = {333.7},
      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:000442226800028},
      doi          = {10.1016/j.nme.2018.07.001},
      url          = {https://juser.fz-juelich.de/record/850780},
}