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An Introduction to Differential EXAFS

open access: yesAIP Conference Proceedings, 2007
Differential EXAFS (DiffEXAFS) is a novel technique for measuring atomic perturbations on a local scale that result from the modulation of a given sample property. Experiments conducted to date have revealed a sensitivity to such perturbations of the order of femtometres [1], two orders of magnitude more sensitive than is considered possible by ...
RUFFONI M. P   +4 more
core   +4 more sources

THE EXAFS OF QUASICRYSTALS

open access: yesLe Journal de Physique Colloques, 1986
EXAFS data for a number of Al-based quasicrystalline alloys are surveyed. A comparative EXAFS study of icosahedral Al86 Mn14, Al85 Mn7 Cr8 and Al86 Cr14 phases is presented in detail. To interpret the EXAFS results, an icosahedral model is proposed in the framework of the α (Al Mn Si) structure and in close relation to recent theories of Mackay ...
A. SADOC
openaire   +2 more sources

Laboratory EXAFS facilities

open access: yes, 1988
This chapter has demonstrated that high quality XANES and EXAFS spectra can be collected with laboratory EXAFS facilities. The limitations of these facilities have been discussed and it has been shown that synchrotronlike reso lutions, which are sometimes claimed by enthusiastic supporters of synchrotron facilities to be essential for deriving reliable
Koningsberger, D.C., Prins, R.
core   +4 more sources

EXAFS studies on copper transferrin

open access: yesJournal of Inorganic Biochemistry, 1992
Abstract EXAFS spectra of the dicopper and monocopper complexes of human serum transferrin have been recorded and compared to those of the native iron derivative. The experimental data have been analyzed by comparison with EXAFS data obtained from copper(II) model compounds.
Mangani, Stefano, Messori, Luigi
openaire   +4 more sources

EXAFS study on arsenite(V) adsorption onto goethite and hematite

open access: yesHe jishu, 2021
BackgroundArsenic (As) is one of the most toxic pollutants in the environment. Its adsorption on the surface of iron oxyhydr (oxides) is an important factor affecting its migration and transformation behavior. Goethite and hematite are ubiquitous in soil,
YANG Wang   +8 more
doaj   +1 more source

Emergence of the first XAFS/XRF beamline in the Middle East: providing studies of elements and their atomic/electronic structure in pluridisciplinary research fields

open access: yesJournal of Synchrotron Radiation, 2022
XAFS/XRF is a general-purpose absorption spectroscopy beamline at the Synchrotron-light for Experimental Science and Applications in the Middle East (SESAME), Jordan.
Messaoud Harfouche   +10 more
doaj   +1 more source

Wiggler radiation at a low-emittance storage ring and its usage for X-ray absorption spectroscopy

open access: yesJournal of Synchrotron Radiation, 2022
A wiggler is a high-power insertion device that was used in the past to produce a smooth wide-band X-ray spectrum. It is widely believed that on low-emittance synchrotrons this X-ray source loses its spatial and spectral homogeneity and therefore becomes
Konstantin Klementiev   +2 more
doaj   +1 more source

Size and structure of hexanuclear plutonium oxo-hydroxo clusters in aqueous solution from synchrotron analysis

open access: yesJournal of Synchrotron Radiation, 2022
The size and shape of a water-soluble hexanuclear plutonium cluster were probed by combining synchrotron small-angle X-ray scattering (SAXS) and extended X-ray absorption fine structure (EXAFS).
Thomas Dumas   +6 more
doaj   +1 more source

From EXAFS of reference compounds to U(VI) speciation in contaminated environments

open access: yesJournal of Synchrotron Radiation, 2022
Understanding the speciation of technogenic uranium in natural systems is crucial for estimating U migration and bioavailability and for developing remediation strategies for contaminated territories.
Anna Krot   +5 more
doaj   +1 more source

The Influences of Magnesium upon Calcium Phosphate Mineral Formation and Structure as Monitored by X-ray and Vibrational Spectroscopy

open access: yesSoil Systems, 2020
Calcium phosphate minerals are typically the solubility-limiting phase for phosphate in calcareous soils. Magnesium (Mg), despite being present in high concentrations in calcareous soils, has been largely neglected in the study of formation and ...
David M. Hilger   +2 more
doaj   +1 more source

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