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@ARTICLE{Kozhevnikov:208018,
      author       = {Kozhevnikov, I. V. and Filatova, E. O. and Sokolov, A. A.
                      and Konashuk, A. S. and Siewert, F. and Störmer, M. and
                      Gaudin, J. and Keitel, Barbara and Samoylova, Liubov and
                      Sinn, Harald},
      title        = {{C}omparative study of the {X}-ray {R}eflectivity and
                      in-depth {P}rofile of $a-{C}$, ${B}_{4}{C}$ and ${N}i$
                      {C}oatings at 0.1–2 ke{V}},
      journal      = {Journal of synchrotron radiation},
      volume       = {22},
      number       = {2},
      issn         = {1600-5775},
      address      = {Chester},
      publisher    = {IUCr},
      reportid     = {PUBDB-2015-01503},
      pages        = {348 - 353},
      year         = {2015},
      abstract     = {The use of soft X-rays near the carbon edge of absorption
                      (270-300 eV) greatly enhances studies in various branches of
                      science. However, the choice of reflecting coatings for
                      mirrors operating in free-electron and X-ray free-electron
                      laser (FEL and XFEL) beamlines in this spectral range is not
                      so evident and experimental justifications of the mirror
                      efficiency are rather limited. In the present paper it is
                      demonstrated experimentally that the reflectivity of
                      $B_{4}C-$ and $Ni$-coated grazing-incidence mirrors is high
                      enough for their operation in FEL or XFEL beamlines near the
                      carbon $K$-edge of absorption. The minimal reflectivity of
                      both mirrors proves to exceed 80\% near the carbon
                      absorption edge at a grazing angle of 0.6°. An in-depth
                      profile of the chemical elements composing the reflecting
                      coatings is reconstructed based on analysis of a set of
                      reflectivity curves measured versus the grazing angle at
                      different photon energies in the soft X-ray spectral region.
                      This allows us to predict correctly the mirror reflectivity
                      at any X-ray energy and any grazing angle.},
      cin          = {Eur.XFEL},
      ddc          = {540},
      cid          = {$I:(DE-H253)Eur_XFEL-20120731$},
      pnm          = {6213 - Materials and Processes for Energy and Transport
                      Technologies (POF3-621) / 6G13 - XFEL (POF3-622)},
      pid          = {G:(DE-HGF)POF3-6213 / G:(DE-HGF)POF3-6G13},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000350641100016},
      pubmed       = {pmid:25723936},
      doi          = {10.1107/S1600577515000430},
      url          = {https://bib-pubdb1.desy.de/record/208018},
}