Quantification for 3D micro X-ray fluorescence

Mantouvalou, Ioanna; Malzer, Wolfgang; Kanngießer, Birgit

doi:10.1016/j.sab.2012.08.002

Cited by 49 publications

(36 citation statements)

References 30 publications

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“…This unique experimental arrangement enables XRF analysis of three-dimensionally limited, small volume sample [20][21][22][23]. Quantification of confocal micro-XRF has been studied for layered materials [24] as well as mosaic model [25]. shows a laboratory-made confocal micro XRF setup at OCU [26].…”

Section: Confocal Micro-xrf In the Laboratorymentioning

confidence: 99%

New developments of X-ray fluorescence imaging techniques in laboratory

Tsuji

Matsuno

Takimoto

et al. 2015

Spectrochimica Acta Part B: Atomic Spectroscopy

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Section: Confocal Micro-xrf In the Laboratorymentioning

confidence: 99%

New developments of X-ray fluorescence imaging techniques in laboratory

Tsuji

Matsuno

Takimoto

et al. 2015

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…Even then the spectral data will show poor statistics [19]. Bent mirrors, crystals and multilayers, tapered glass monocapillaries, complex polycapillary lens systems, Bragg-Fresnel lens (BFL), 1-D and 2-D waveguides and refractive lenses have been developed and tested for use in micrometre to sub-micrometre focussing at synchrotron beamlines.…”

Section: Microscopic-x-ray Analysis General Considerationsmentioning

confidence: 99%

X-Ray Imaging

Adams¹,

Barbante²

2015

Chemical Imaging Analysis

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“…And since polycapillaries function on the principle of critical reflection, they exhibit severe chromaticity in both spatial resolution and sensitivity. The magnitude of this spatial resolution and its dependence on fluorescence energy are documented in many papers [6,11], and have been explicitly cited as key limitations of the technique [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Germanium collimating micro-channel arrays for high resolution, high energy confocal X-ray fluorescence microscopy

Agyeman-Budu¹,

Choudhury²,

Coulthard³

et al. 2016

AIP Conference Proceedings

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Abstract. Confocal x-ray fluorescence microscopy (CXRF) allows direct detection of x-ray fluorescence from a micron-scale 3D volume of an extended, unthinned sample. We have previously demonstrated the use of a novel collection optic, fabricated from silicon, that improves the spatial resolution of this approach by an order of magnitude over CXRF using polycapillaries. The optic, called a collimating channel array (CCA), consists of micron-scale, lithographically-fabricated arrays of collimating channels, all directed towards a single source position. Due to the limited absorbing power of silicon, the useful energy range of these optics was limited to fluorescence emission below about 10 keV. Here, we report fabrication of CCAs from germanium substrates, and demonstrate their practical use for CXRF up to 20 keV. Specifically we demonstrate a nearly energy-independent critical spatial resolution d R of 2.1±0.17 µm from 2-20 keV, as well as excellent background reduction compared to silicon-based CCAs throughout this energy range. Design details of the optic and background-reduction holder are described. Two versions of the optic are now available upon request at the beamline 20ID-B, Advanced Photon Source (APS) -Argonne National Laboratory.

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Quantification for 3D micro X-ray fluorescence

Cited by 49 publications

References 30 publications

New developments of X-ray fluorescence imaging techniques in laboratory

New developments of X-ray fluorescence imaging techniques in laboratory

X-Ray Imaging

Germanium collimating micro-channel arrays for high resolution, high energy confocal X-ray fluorescence microscopy

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