Results 11 to 20 of about 484 (218)

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

open access: yesJournal 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   +4 more
openaire   +2 more sources

Effective coordination numbers from EXAFS: general approaches for lanthanide and actinide dioxides

open access: yesJournal of Synchrotron Radiation, 2022
Extended X-ray absorption fine structure (EXAFS) is a comprehensive and usable method for characterizing the structures of various materials, including radioactive and nuclear materials. Unceasing discussions about the interpretation of EXAFS results for
Anna Romanchuk   +6 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

Probing the role of thermal vibrational disorder in the SPT of VO $$_2$$ 2 by Raman spectroscopy

open access: yesScientific Reports, 2021
Phase competition in transition metal oxides has attracted remarkable interest for fundamental aspects and technological applications. Here, we report a concurrent study of the phase transitions in undoped and Cr-doped VO $$_2$$ 2 thin films.
Aminat Oyiza Suleiman   +6 more
doaj   +1 more source

Bayesian sparse modeling of extended x-ray absorption fine structure to determine interstitial oxygen positions in yttrium oxyhydride epitaxial thin film

open access: yesAIP Advances, 2021
This article presents a Bayesian sparse modeling method to analyze extended x-ray absorption fine structure (EXAFS) data with basis functions built on two-body signals.
Hiroyuki Kumazoe   +12 more
doaj   +1 more source

Extended x-ray absorption fine structure measurement of ramp compressed Ti using laser-irradiated metallic foil as x-ray source on SGIII prototype laser facility

open access: yesAIP Advances, 2023
Laser-irradiated metallic foils were considered as x-ray sources for extended x-ray absorption fine structure (EXAFS) measurements and confirmed by experiments on the SGIII prototype facility.
Yun Hu   +5 more
doaj   +1 more source

On the selective aerobic oxidation of benzyl alcohol with Pd/Au-nanoparticles in batch and flow

open access: yesNanotechnology Reviews, 2014
Nanoparticles (NP) have specific catalytic properties, which are influenced by parameters like their size, shape, or composition. Bimetallic NPs, composed of two metal elements can show an improved catalytic activity compared to the monometallic NPs. We,
Alex Hannes   +4 more
doaj   +1 more source

Coupling X-ray Absorption and Raman Spectroscopies to Characterize Iron Species in a Karst Pedosedimentary Record

open access: yesSoil Systems, 2022
The identification of iron (Fe) forms throughout a sediment sequence was investigated by X-ray Absorption Near Edge Spectroscopy (XANES) and Extended X-ray Absorption Fine Structure (EXAFS) at the Fe K-edge, paired with Raman micro-spectroscopy.
Beatrice Giannetta   +5 more
doaj   +1 more source

Investigation of temperature and pressure effects on thermodynamic parameters of intermetallic alloy in EXAFS

open access: yesCogent Engineering, 2020
This work advances the anharmonic correlated Einstein model to investigate how pressure and temperature affect the Debye–Waller factor and thermodynamic parameters of an intermetallic alloy. By using the anharmonic correlated Einstein model in extended X-
Nguyen Ba Duc
doaj   +1 more source

Theory of x-ray absorption spectroscopy: A microscopic Bloch equation approach for two-dimensional solid states

open access: yesPhysical Review Research, 2023
We develop a self-consistent Maxwell-Bloch formalism for the interaction of x-rays with two-dimensional crystalline materials by incorporating the Bloch theorem and Coulomb many-body interaction. This formalism is illustrated for graphene, by calculating
Dominik Christiansen   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy