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@ARTICLE{Zlobinski:864807,
      author       = {Zlobinski, Miroslaw and Brezinsek, Sebastijan and Bürger,
                      Andreas and Dominiczak, Karsten and Esser, Hans Günter and
                      Freisinger, Michaele and Huber, Alexander and Linsmeier,
                      Christian and Martynova, Yulia and Nicolai, Dirk and
                      Pintsuk, Gerald and Schweer, Bernd and Sergienko, Gennady
                      and Spilker, Benjamin and Terra, Alexis and Thomas, Jörg
                      and Unterberg, Bernhard},
      title        = {{F}uel {R}etention {D}iagnostic {S}etup ({FREDIS}) for
                      desorption of gases from beryllium and tritium containing
                      samples},
      journal      = {Fusion engineering and design},
      volume       = {146},
      number       = {Part A},
      issn         = {0920-3796},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2019-04463},
      pages        = {1176 - 1180},
      year         = {2019},
      abstract     = {In fusion devices, the retention of the fusion fuel
                      deuterium (D) and tritium (T) in plasma-facing components
                      (PFCs) is a major concern. Measurement of their hydrogen
                      isotope content gives insight into the retention physics.In
                      FREDIS, two methods of thermal desorption are used for
                      retention measurements: In Thermal Desorption Spectrometry
                      (TDS) the samples are heated by 6 infrared lamps up to
                      1433 K with linear temperature ramps of up to 1.67 K/s.
                      The desorbed gases are detected up to 100 amu/e with a
                      double-QMS (Quadrupole Mass Spectrometer) that can
                      distinguish between helium and D2 and uses an innovative
                      differential pumping system.In a connected vacuum chamber, a
                      ∅3 mm spot can be heated on the sample surface by a high
                      energy Nd:YAG laser pulse (E0 < 100 J) within milliseconds
                      (0.1–20 ms) to several thousand degrees. This method of
                      Laser-Induced Desorption (LID) can also be applied inside
                      the fusion chamber and is planned as in situ retention
                      diagnostic for ITER. In FREDIS, LID is thus tested and used
                      as ex situ analysis method utilising the same double-QMS for
                      absolute quantification. FREDIS is capable of handling
                      beryllium (Be) by means of glove boxes and in the future
                      also tritium using a tritium trap to analyse also samples
                      from JET and ITER. In this contribution we present the
                      specifications of FREDIS and compare TDS and LID},
      cin          = {IEK-4},
      ddc          = {530},
      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:000488307400264},
      doi          = {10.1016/j.fusengdes.2019.02.035},
      url          = {https://juser.fz-juelich.de/record/864807},
}