Results 11 to 20 of about 23,193 (311)

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

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
doaj   +1 more source

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

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
doaj   +1 more source

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

Quick-EXAFS implementation on the general purpose EXAFS beamline at ESRF [PDF]

Journal of Synchrotron Radiation, 2011
The new implementation of QEXAFS acquisition on the general purpose EXAFS beamline BM29 at the European Synchrotron Radiation Facility is presented. By adopting a continuous-scan mode, a high signal-to-noise ratio can be maintained, together with a fixed exit beam and full compatibility with step-by-step operation, while reducing acquisition times to a
Prestipino, Carmelo, Mathon, Olivier, Hino, Ricardo, Beteva, Antonia, Pascarelli, Sakura   +4 more
openaire   +2 more sources

EXAFS, DFT, light-induced nucleobase binding, and cytotoxicity of the photoactive complex cis-[Ru(bpy)2(CO)Cl]+ [PDF]

, 2010
The aqueous photochemistry of cis-[Ru(bpy)2(CO)Cl]+ (1) was investigated at 310 K and under visible light (white) irradiation by NMR and ESI-HR-MS. Complex 1 releases a Cl ligand, coordinates a solvent molecule, and forms the complex cis-[Ru(bpy)2(CO ...
Gianolio, Diego, Claudio Garino, Sadler, P. J., Fabrizio Bardelli, Tiziana Ruiu, Roberto Gobetto, Luca Salassa, Carlo Lamberti, Salassa, Luca, Westendorf, Aron, Bednarski, Patrick J., Peter J. Sadler, Pizarro, Ana M., Bardelli, Fabrizio, Ana M. Pizarro, Lamberti, Carlo, Patrick J. Bednarski, Gobetto, Roberto, Diego Gianolio, Ruiu, Tiziana, Aron Westendorf, Garino, Claudio   +21 more
core   +1 more source

Structural selective charge transfer in iodine-doped carbon nanotubes [PDF]

, 2006
We have investigated iodine intercalated carbon nanostructures by extended X-ray absorption fine structure (EXAFS) and Raman spectroscopies. We discuss here the charge transfer and the iodine–carbon interaction as a function of the carbon nanostructures (
Almairac, Robert, Almairac, R., Aznar, R., Michel, Thierry, Alvarez, Laurent, Bantignies, J.L., Sauvajol, J.L, Flahaut, Emmanuel, Michel, T., Alvarez, L., Aznar, Raymond, Sauvajol, Jean-Louis, Mathon, Olivier, Mathon, O., Bantignies, Jean-Louis   +14 more
core   +1 more source

Shedding light on the enigmatic TcO2·xH2O structure with density functional theory and EXAFS spectroscopy

, 2022
The β-emitting 99Tc isotope is a high-yield fission product in 235U and 239Pu nuclear reactors, raising special concern in nuclear waste management due to its long half-life and the high mobility of pertechnetate (TcO4−).
Andreas C., Scheinost, Augusto F., Oliveira, Agnieszka, Kuc, Thomas, Heine, Ulrich, Abram   +4 more
core   +1 more source

Structure and chemical bonding in Zr-doped anatase TiO2 nanocrystals [PDF]

, 2007
Zirconium-doped anatase TiO2 nanopowders and nanoceramics with particle sizes between 12 and 30 nm were investigated by EXAFS spectroscopy. Furthermore, ab initio calculations based on density functional theory were performed to analyze changes in the ...
Weibel, Alicia, Lippens, P. E., R. Bouchet, Bouchet, Renaud, Knauth, P., Knauth, Philippe, Bouchet, R., A. V. Chadwick, Lippens, Pierre-Emmanuel, P. E. Lippens, Chadwick, Alan V., A. Weibel, P. Knauth, Weibel, A., Chadwick, A. V.   +14 more
core   +1 more source