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@ARTICLE{Bosak:889943,
      author       = {Bosak, Alexei and Dideikin, Artur and Dubois, Marc and
                      Ivankov, Oleksandr and Lychagin, Egor and Muzychka, Alexei
                      and Nekhaev, Grigory and Nesvizhevsky, Valery and Nezvanov,
                      Alexander and Schweins, Ralf and Strelkov, Alexander and
                      Vul’, Alexander and Zhernenkov, Kirill},
      title        = {{F}luorination of {D}iamond {N}anoparticles in {S}low
                      {N}eutron {R}eflectors {D}oes {N}ot {D}estroy {T}heir
                      {C}rystalline {C}ores and {C}lustering {W}hile {D}ecreasing
                      {N}eutron {L}osses},
      journal      = {Materials},
      volume       = {13},
      number       = {15},
      issn         = {1996-1944},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2021-00549},
      pages        = {3337 -},
      year         = {2020},
      abstract     = {If the wavelength of radiation and the size of
                      inhomogeneities in the medium are approximately equal, the
                      radiation might be intensively scattered in the medium and
                      reflected from its surface. Such efficient nanomaterial
                      reflectors are of great scientific and technological
                      interest. In previous works, we demonstrated a significant
                      improvement in the efficiency of reflection of slow neutrons
                      from a powder of diamond nanoparticles by replacing hydrogen
                      located on the surface of nanoparticles with fluorine and
                      removing the residual sp2 amorphous shells of nanoparticles
                      via the fluorination process. In this paper, we study the
                      mechanism of this improvement using a set of complementary
                      experimental techniques. To analyze the data on a
                      small-angle scattering of neutrons and X-rays in powders of
                      diamond nanoparticles, we have developed a model of
                      discrete-size diamond nanospheres. Our results show that
                      fluorination does not destroy either the crystalline cores
                      of nanoparticles or their clustering in the scale range of
                      0.6–200 nm. This observation implies that it does not
                      significantly affect the neutron scattering properties of
                      the powder. We conclude that the overall increase in
                      reflectivity from the fluorinated nanodiamond powder is
                      primarily due to the large reduction of neutron losses in
                      the powder caused by the removal of hydrogen
                      contaminations.},
      cin          = {JCNS-FRM-II / JCNS-4 / MLZ},
      ddc          = {600},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-4-20201012 / I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6G15 - FRM II / MLZ (POF3-6G15)},
      pid          = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
      experiment   = {EXP:(DE-MLZ)MARIA-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {32727005},
      UT           = {WOS:000567140600001},
      doi          = {10.3390/ma13153337},
      url          = {https://juser.fz-juelich.de/record/889943},
}