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@ARTICLE{Feldkamp:56259,
      author       = {Feldkamp, J.M. and Schroer, C. G. and Patommel, J. and
                      Lengeler, B. and Günzler, T. F. and Schweitzer, M. and
                      Stenzel, C. and Dieckmann, M. and Schröder, W. H.},
      title        = {{A} compact {X}-ray microtomography system for element
                      mapping and absorption imaging},
      journal      = {Review of scientific instruments},
      volume       = {78},
      issn         = {0034-6748},
      address      = {[S.l.]},
      publisher    = {American Institute of Physics},
      reportid     = {PreJuSER-56259},
      pages        = {073702-01 - 077302-8},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We have designed and built a compact x-ray microtomography
                      system to perform element mapping and absorption imaging by
                      exploiting scanning fluorescence tomography and full-field
                      transmission microtomography, respectively. It is based on a
                      low power microfocus tube and is potentially appropriate for
                      x-ray diagnostics in space. Full-field transmission
                      tomography yields the three-dimensional inner structure of
                      an object. Fluorescence microtomography provides the element
                      distribution on a virtual section through the sample. Both
                      techniques can be combined for appropriate samples.
                      Microradiography as well as fluorescence mapping are also
                      possible. For fluorescence microtomography a small and
                      intensive microbeam is required. It is generated using a
                      polycapillary optic. Operating the microfocus tube with a
                      molybdenum target at 12 W, a microbeam with a full width at
                      half maximum lateral extension of 16 microm and a flux of
                      about 10(8) photonss is generated. As an example of
                      application, this beam is used to determine the element
                      distribution inside dried plant samples. For full-field
                      scanning tomography, the x-ray optic is removed and the
                      sample is imaged in magnifying projection onto a
                      two-dimensional position sensitive detector. Depending on
                      the sample size, a spatial resolution down to about 10
                      microm is possible in this mode. The method is demonstrated
                      by three-dimensional imaging of a rat humerus.},
      keywords     = {Absorptiometry, Photon: instrumentation / Absorptiometry,
                      Photon: methods / Equipment Design / Equipment Failure
                      Analysis / Miniaturization / Reproducibility of Results /
                      Sensitivity and Specificity / Tomography, X-Ray:
                      instrumentation / J (WoSType)},
      cin          = {ICG-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)ICG-3-20090406},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Instruments $\&$ Instrumentation / Physics, Applied},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:17672761},
      UT           = {WOS:000248486300031},
      doi          = {10.1063/1.2751094},
      url          = {https://juser.fz-juelich.de/record/56259},
}