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@ARTICLE{Jiang:874192,
      author       = {Jiang, XI and Sergienko, G. and Kreter, A. and Brezinsek,
                      S. and Linsmeier, Ch.},
      title        = {{R}eversed-slit spectroscopy method for in situ measurement
                      of {H} isotopes on plasma facing material},
      journal      = {Journal of Instrumentation},
      volume       = {15},
      number       = {01},
      issn         = {1748-0221},
      address      = {London},
      publisher    = {Inst. of Physics},
      reportid     = {FZJ-2020-01291},
      pages        = {C01007 - C01007},
      year         = {2020},
      abstract     = {Optic spectroscopy methods are employed for plasma facing
                      component (PFC) material diagnostics and H isotopes
                      retention on various platforms. A common issue of those
                      spectroscopy methods is the measurement sensitivity. Various
                      improvement methods have been investigated. In the current
                      work, a 'reversed-slit' method is explored, aiming to
                      maximise signal input while retain a reasonably good line
                      resolution. A thin metal wire with a diameter that is
                      comparable to a normal slit width is placed in front of an
                      open slit. By opening the slit the input of the emission
                      light is maximised. The thin wire casts a line of shadow on
                      the spectral image. The shadow line is used as the
                      'characteristic line' to identify and separate the spectral
                      line of each H isotope. The result shows that an open slit
                      of 3 mm width can bring an intensity increase of 20–30
                      times compared to a 100 μm wide normal slit without
                      compromising the resolution.},
      cin          = {IEK-4},
      ddc          = {610},
      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:000525449100007},
      doi          = {10.1088/1748-0221/15/01/C01007},
      url          = {https://juser.fz-juelich.de/record/874192},
}