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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},
}