Results 1 to 10 of about 484 (218)

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

Journal 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, Hamed Tarawneh, Pedro Fernandes Tavares   +2 more
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Size and structure of hexanuclear plutonium oxo-hydroxo clusters in aqueous solution from synchrotron analysis

Journal 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, Matthieu Virot, Denis Menut, Christelle Tamain, Cyril Micheau, Sandrine Dourdain, Olivier Diat   +6 more
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From EXAFS of reference compounds to U(VI) speciation in contaminated environments

Journal 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, Irina Vlasova, Alexander Trigub, Alexey Averin, Vasily Yapaskurt, Stepan Kalmykov   +5 more
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Coupling between γ-irradiation and synchrotron-radiation-based XAFS techniques for studying Mn-doped ZnO nanoparticles

Journal of Synchrotron Radiation, 2022
γ-Irradiation and synchrotron-radiation-based X-ray absorption fine-structure (XAFS) spectroscopy have been used to induce structure disorder through the interaction of γ-rays (200 kGy) with fabricated Mn-doped ZnO nanoparticles (NPs) and then to examine
N. G. Imam, Messaoud Harfouche, A. A. Azab, S. Solyman   +3 more
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EXAFS spectroscopy of quasicrystals [PDF]

Crystallography Reports, 2007
The results of the investigation of the features of the local structure of quasicrystalline materials by extended X-ray absorption fine structure (EXAFS) spectroscopy with the use of synchrotron radiation are analyzed. The advantages of this method from the point of view of deriving information about the local shifts of the atoms forming an icosahedral
Menushenkov, A. P., Rakshun, Ya. V.
openaire   +2 more sources

Ultrafast X-ray Photochemistry at European XFEL: Capabilities of the Femtosecond X-ray Experiments (FXE) Instrument

Applied Sciences, 2020
Time-resolved X-ray methods are widely used for monitoring transient intermediates over the course of photochemical reactions. Ultrafast X-ray absorption and emission spectroscopies as well as elastic X-ray scattering deliver detailed electronic and ...
Dmitry Khakhulin, Florian Otte, Mykola Biednov, Christina Bömer, Tae-Kyu Choi, Michael Diez, Andreas Galler, Yifeng Jiang, Katharina Kubicek, Frederico Alves Lima, Angel Rodriguez-Fernandez, Peter Zalden, Wojciech Gawelda, Christian Bressler   +13 more
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EXAFS study on arsenite(V) adsorption onto goethite and hematite

He 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, LIN Jinru, YAO Hui, Yuanming Pan, Emilio Heredia, Roman Chernikov, ZHANG Danni, WANG Shaofeng, JIA Yongfeng   +8 more
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Emergence of the first XAFS/XRF beamline in the Middle East: providing studies of elements and their atomic/electronic structure in pluridisciplinary research fields

Journal 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, Mahmoud Abdellatief, Yazeed Momani, Anas Abbadi, Mohammad Al Najdawi, Mustafa Al Zoubi, Basil Aljamal, Salman Matalgah, Latif U. Khan, Andrea Lausi, Giorgio Paolucci   +10 more
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Amplitude reduction in EXAFS [PDF]

Journal of Synchrotron Radiation, 1999
In real systems, inelastic processes remove photoelectrons from the elastic scattering channel. This reduces the amplitude of the EXAFS causing disagreement between the experimental and theoretically predicted amplitudes. Traditionally these discrepancies were treated by including two semi empirical reduction factors in the data analysis: a mean tree ...
Roy, Mervyn, Gurman, Steve J.
openaire   +3 more sources

Extended X-Ray Absorption Fine Structure of ZrW2O8: Theory vs. Experiment

Frontiers in Chemistry, 2018
Extended x-ray absorption fine structure (EXAFS) is well-suited for investigations of structure and disorder of complex materials. Recently, experimental measurements and analysis of EXAFS have been carried out to elucidate the mechanisms responsible for
Fernando D. Vila, John W. Spencer, Joshua J. Kas, John J. Rehr, Frank Bridges   +4 more
doaj   +1 more source