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@BOOK{Neumeier:811616,
      key          = {811616},
      editor       = {Neumeier, Stefan and Klinkenberg, Martina and Bosbach,
                      Dirk},
      title        = {{I}nstitute of {E}nergy and {C}limate {R}esearch {IEK}-6:
                      {N}uclear {W}aste {M}anagement {R}eport 2013 / 2014
                      {M}aterial {S}cience for {N}uclear {W}aste {M}anagement},
      volume       = {327},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2016-04028},
      isbn         = {978-3-95806-155-2},
      series       = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
                      Umwelt / Energy $\&$ Environment},
      pages        = {219 S.},
      year         = {2016},
      abstract     = {This is the third bi-annual report of the $\textbf{Nuclear
                      Waste Management section of the Institute of Energy and
                      Climate Research (IEK-6) at Forschungszentrum Jülich}$
                      since 2009 – almost a tradition. Our institute has seen
                      two more years with exciting scientific work, but also major
                      changes regarding nuclear energy in Germany and beyond.
                      After the reactor accident in Fukushima (Japan) in 2011, it
                      was decided in Germany to phase out electricity production
                      by nuclear energy by 2022. It seems clear, that the
                      decommissioning of the nuclear power plants will take
                      several decades. The German nuclear waste repository Konrad
                      for radioactive waste with negligible heat generation (all
                      low level and some of the intermediate level radioactive
                      waste) will start operation in the next decade. The new site
                      selection act from 2013 re-defines the selection procedure
                      for the German high level nuclear waste repository.
                      Independently of the decision to stop electricity production
                      by nuclear energy, Germany has to manage and ultimately
                      dispose of its nuclear waste in a safe way. Our basic and
                      applied research for the safe management of nuclear waste is
                      focused on radiochemistry and materials chemistry aspects
                      – it is focused on the behaviour of radionuclides and
                      radioactive waste materials within the back-end of the
                      nuclear fuel cycle. It is organized in four areas: (1)
                      research supporting the scientific basis of the safety case
                      of a deep geological repository for high level nuclear
                      waste, (2) fundamental structure research of radionuclide
                      containing (waste) materials (3) R \& D for waste management
                      concepts for special nuclear wastes and (4) international
                      safeguards. A number of excellent scientific results have
                      been published in more than 80 papers in international
                      peer-reviewed scientific journals in 2013 - 2014. Here, I
                      would like to mention four selected scientific highlights
                      – more can be found in this report:(1) The retention of
                      radionuclides within a nuclear waste repository system by
                      secondary phases for the long-term safety assessment is one
                      of the major research topics in the institute. The
                      fundamental understanding of a long-standing open issue
                      regarding the thermodynamics of radium-barium-sulfate
                      $\textbf{solid solutions}$ and its applicability in
                      long-term safety assessments for nuclear waste disposal
                      could be resolved. This was achieved by a novel approach
                      combining atomistic simulations, radiochemical batch-type
                      laboratory experiments and modern analytical techniques
                      supported by thermodynamic modelling allowing a reliable
                      description of Ra solubility control by a (Ba,Ra)SO$_{4}$
                      solid solution. This research is supported by the Swedish
                      waste management agency SKB.(2) A major step forward was
                      achieved regarding the prediction of actinide- and
                      lanthanide bearing materials properties by
                      $\textbf{atomistic simulations}$. Performance tests of the
                      DFT+U method for calculations of f-element-bearing systems
                      (the Hubbard U parameter derived from first principle
                      methods) showed that this method, in contrast to standard
                      DFT, results inexceptionally good predictions of the
                      formation and reaction enthalpies as well as the structures
                      of lanthanide- and actinide-bearing materials.(3) The
                      $\textbf{actinide solid state chemistry}$ group has been
                      very active in recent years tounravel the crystal structure
                      of actinide containing oxo-salts. From the 1101 new crystal
                      structure entries in the ICSD crystal structure database
                      between 2005 and 2012, Prof. Evgeny Alekseev has contributed
                      to 98 entries (almost 10\%). [...]},
      cin          = {IEK-6},
      cid          = {I:(DE-Juel1)IEK-6-20101013},
      pnm          = {161 - Nuclear Waste Management (POF3-161)},
      pid          = {G:(DE-HGF)POF3-161},
      typ          = {PUB:(DE-HGF)3},
      url          = {https://juser.fz-juelich.de/record/811616},
}