ANKA-FLUO - X-ray fluorescence beamline situated at bending magnet port of the ANKA storage ring
Scientific applications
- Environmental samples (e.g. toxic element bearing phases)
- Environmental micro particle(e.g. dust particles stemming from accidents, aerosols, meteor impact ejecta)
- Material research (contaminations in pure materials or homogeneity of thin films)
- Art and Archaeometry (precious samples, old prints and paintings)
- Biology: Organs of insects and small animals
MethodsSynchrotron X-Ray Fluorescence Microprobe (SR-µXRF):
- X-ray Multielemental analysis technique on microscopically small area on sample surface or small volume element in the bulk.
- Trace element detection at sub-ppm level (i.e. ~10ng/g for Sr in organic matrix)
- Two dimensional mapping of the sample with µm resolution
- Three dimensional information with confocal detector geometry or X-ray fluorescence computer tomography
- Completely non-destructive
Total reflection x-ray fluorescence
- surface-sensitive (grazing incindence)
- analyzes trace impurities on the surface of flat samples (e.g. silicon wafers)
- analyzes very small sample masses employed on a polished substrate.
- probing depth variable from the sub nm to the µm range.
- Minimum detection limit 108 atoms/cm2
Confocal X-Ray Fluorescence Microprobe:
- three dimensional elemental distribution on a micrometer scale
- elemental maps at different depth levels below the surface with a depth resolution of about 10-20μm
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Energy range
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1.5 keV - 33 keV
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Energy resolution [ΔE/E]
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2x10-2 or white light
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Source
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1.5 T Bending magnet (Ec = 6 keV)
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Optics
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Double multilayer monochromator (W-Si multilayers in 2.7nm period)
Focusing optics: x-ray lenses(CRL), Polycapillaries |
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Flux at sample position
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Poly-capillary: 1 x1011 ph/s @17 keV (12μm x 12μm) CRL: 2x109 ph/s @ 17 keV (5µm x 2µm) |
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Beam size at sample
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5 mm (Hor) x 2 mm (Ver) down to 2 µm x 1 µm
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Sample environment
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Vacuum (10-2mbar, inert gas, air)
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Experimental setup / detector
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1 Ionisation chamber, 2 PIN-Diodes for monotoring
***) SiMCD- Vortex Silicon Multicathode DetectorDerectors:
*) Si(Li) -energy dispersive detector produced by Oxford Instruments **) HPGe- High Purity Germanium detector produced by Princeton Gamma- Tech (PGT) |
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Software / Data treatment
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SPEC, AXIL, Spectran, MC-simulation (MSIM), newplot, PyMca
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Up-to date publication list at “Mendeley”
Publications involving research at ANKA-FLUO Beamline is a group in Biological Sciences, Chemistry, Physics on Mendeley.
ANKA-FLUO - X-ray fluorescence beamline situated at bending magnet port of the ANKA storage ring
General information on the FLUO-Beamline:
Simon, R., Buth, G., & Hagelstein, M. Journals
2003, "The X-ray fluorescence facility at ANKA, Karlsruhe: Minimum detection limits and micro probe capabilities", Nuclear Instruments and Methods in Physics Research Section B:
Beam Interactions with Materials and Atoms, vol. 199, pp. 554-558.
2008, "Arsenic in framboidal pyrite from estuarine sediments of the Achterwasser lagoon, SW Baltic Sea", Sedimentology, vol. in press.
2008, "Determination of the elemental distribution in human joint bones by SR micro XRF", X-Ray Spectrometry, vol. 37, pp. 3-11.
2007, "Microanalysis (micro-XRF, micro-XANES, and micro-XRD) of a tertiary sediment using microfocused synchrotron radiation",
Microscopy and Microanalysis, vol. 13, pp. 165-172.
2007, "Non-destructive analysis for the investigation of decomposition phenomena of historical manuscripts and prints",
Spectrochimica Acta Part B: Atomic Spectroscopy, vol. 62, pp. 669-676.
2007, "Adsorption of arsenic species from water using activated siderite-hematite column filters",
Journal of Hazardous Materials, vol. 151, pp. 628-635.
2007, " Removal of arsenic from aqueous solution by natural siderite nad hematite”,
App. Geochemestry, vol. 22, p. 1039
2007, "Distribution and redox status of Arsenic in framboidal pyrite from estuarine sediments",
Geochemica et Cosmochemica Acta, vol. 71, p. A519.
2007, "Adsorption of As in rice paddy soils of West Bengal",
Geochemica et Cosmochemica Acta p. A519.
2007, "SY-XRF study of Hans Baldung Grien silverpoint drawings and the silver stylus from the Karlsruhe sketchbook",
X-Ray Spectrometry, vol. 36, pp. 173-177. doi:10.1016/j.nimb.2006.03.159
2006, "Characterization and source term assessments of radioactive particles from Marshall Islands using non-destructive analytical techniques", Spectrochimica Acta Part B:
Atomic Spectroscopy, vol. 61, pp. 971-979 doi:10.1016/j.sab.2006.09.002
2005, "Source term identification of environmental radioactive Pu/U particles by their characterisation with non-destructive spectrochemical analytical techniques",
Spectrochimica Acta Part B: Atomic Spectroscopy, vol. 60, pp. 455-469.
doi:10.1016/j.nimb.2006.03.159
2005, "Impact of irrigation with As rich groundwater on soil and crops: A geochemical case study in West Bengal Delta Plain, India ",
Applied Geochemistry, vol. 20, pp. 1890-1906.
2004, "Non-Destructive Characterization of Low Radioactive Particles from Irish Sea Sediment by Micro X-ray Synchrotron Radiation Techniques: Micro X-Ray Fluorescence (µ-XRF) and Micro X-Ray Absorption Near Edge Structure (µ-XANES) Spectroscopy",
Journal of Analytic Atomic Spectrometry, vol. 19, pp. 1428-1433.
2004, "Pyritisierung von Schwermetallen im Oderästuar",
European Journal of Mineralogy, vol. 16, p. 97.
2005, "Micro-beam X-ray absorption and fluorescence measurement with synchrotron radiation- preliminary results",
IAEA - XRF Newsletter, vol. 9, pp. 3-7.