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000056259 0247_ $$2DOI$$a10.1063/1.2751094
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000056259 084__ $$2WoS$$aInstruments & Instrumentation
000056259 084__ $$2WoS$$aPhysics, Applied
000056259 1001_ $$0P:(DE-HGF)0$$aFeldkamp, J.M.$$b0
000056259 245__ $$aA compact X-ray microtomography system for element mapping and absorption imaging
000056259 260__ $$a[S.l.]$$bAmerican Institute of Physics$$c2007
000056259 300__ $$a073702-01 - 077302-8
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000056259 440_0 $$05309$$aReview of Scientific Instruments$$v78$$x0034-6748
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000056259 520__ $$aWe have designed and built a compact x-ray microtomography system to perform element mapping and absorption imaging by exploiting scanning fluorescence tomography and full-field transmission microtomography, respectively. It is based on a low power microfocus tube and is potentially appropriate for x-ray diagnostics in space. Full-field transmission tomography yields the three-dimensional inner structure of an object. Fluorescence microtomography provides the element distribution on a virtual section through the sample. Both techniques can be combined for appropriate samples. Microradiography as well as fluorescence mapping are also possible. For fluorescence microtomography a small and intensive microbeam is required. It is generated using a polycapillary optic. Operating the microfocus tube with a molybdenum target at 12 W, a microbeam with a full width at half maximum lateral extension of 16 microm and a flux of about 10(8) photonss is generated. As an example of application, this beam is used to determine the element distribution inside dried plant samples. For full-field scanning tomography, the x-ray optic is removed and the sample is imaged in magnifying projection onto a two-dimensional position sensitive detector. Depending on the sample size, a spatial resolution down to about 10 microm is possible in this mode. The method is demonstrated by three-dimensional imaging of a rat humerus.
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000056259 650_2 $$2MeSH$$aAbsorptiometry, Photon: instrumentation
000056259 650_2 $$2MeSH$$aAbsorptiometry, Photon: methods
000056259 650_2 $$2MeSH$$aEquipment Design
000056259 650_2 $$2MeSH$$aEquipment Failure Analysis
000056259 650_2 $$2MeSH$$aMiniaturization
000056259 650_2 $$2MeSH$$aReproducibility of Results
000056259 650_2 $$2MeSH$$aSensitivity and Specificity
000056259 650_2 $$2MeSH$$aTomography, X-Ray: instrumentation
000056259 650_7 $$2WoSType$$aJ
000056259 7001_ $$0P:(DE-HGF)0$$aSchroer, C. G.$$b1
000056259 7001_ $$0P:(DE-HGF)0$$aPatommel, J.$$b2
000056259 7001_ $$0P:(DE-HGF)0$$aLengeler, B.$$b3
000056259 7001_ $$0P:(DE-HGF)0$$aGünzler, T. F.$$b4
000056259 7001_ $$0P:(DE-HGF)0$$aSchweitzer, M.$$b5
000056259 7001_ $$0P:(DE-HGF)0$$aStenzel, C.$$b6
000056259 7001_ $$0P:(DE-HGF)0$$aDieckmann, M.$$b7
000056259 7001_ $$0P:(DE-Juel1)VDB1472$$aSchröder, W. H.$$b8$$uFZJ
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000056259 8567_ $$uhttp://hdl.handle.net/2128/3145$$uhttp://dx.doi.org/10.1063/1.2751094
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