Results 1 to 10 of about 150,014 (114)

Denoising framework for X-ray absorption spectroscopy data [PDF]

open access: yesJournal of Synchrotron Radiation
X-ray absorption spectroscopy (XAS) is a powerful tool for probing the structural and electronic properties of materials, but its analysis is often challenging due to the low signal-to-noise ratio of the XAS spectra.
Tomas Aidukas   +4 more
doaj   +2 more sources

Ultrafast time-resolved X-ray absorption spectroscopy at FemtoMAX beamline [PDF]

open access: yesJournal of Synchrotron Radiation
We report on the development and first experiments at a new X-ray absorption spectroscopy (XAS) endstation at the FemtoMAX beamline of the MAX IV Laboratory.
Van-Thai Pham   +16 more
doaj   +2 more sources

Dispersive X-ray absorption spectroscopy using independent grazing-incidence focusing and convexly bent Bragg-crystal dispersing optics [PDF]

open access: yesJournal of Synchrotron Radiation
We present a modular instrument for dispersive X-ray absorption spectroscopy (DXAS) developed for the Advanced Spectroscopy Beamline at Sector 25 of the Advanced Photon Source.
Juanjuan Huang   +7 more
doaj   +2 more sources

Fluorescence-line-selective soft X-ray absorption spectroscopy: a novel approach to element-specific electronic structure analysis [PDF]

open access: yesJournal of Synchrotron Radiation
A novel approach to soft X-ray fluorescence-yield absorption spectroscopy is presented using a superconducting tunnel junction (STJ) X-ray detector, a new type of detector for the soft X-ray region.
Kota Naito   +2 more
doaj   +2 more sources

Web-CONEXS: an inroad to theoretical X-ray absorption spectroscopy [PDF]

open access: yesJournal of Synchrotron Radiation
Accurate analysis of the rich information contained within X-ray spectra usually calls for detailed electronic structure theory simulations. However, density functional theory (DFT), time-dependent DFT and many-body perturbation theory calculations ...
Joshua D. Elliott   +7 more
doaj   +2 more sources

Time-resolved x-ray absorption spectroscopy probe in ultrafast surface chemistry [PDF]

open access: yesStructural Dynamics
To celebrate the scientific achievement of Jo Stöhr, I present here a personal account of the use of x-ray absorption spectroscopy to probe dynamics on surfaces using x-ray lasers.
Anders Nilsson
doaj   +2 more sources

Calcite Nanocrystals Investigated Using X-ray Absorption Spectroscopy

open access: yesCrystals, 2021
For the present work, calcite nanocrystals were grown by annealing precursors at 500 °C. These precursors were obtained by three different thermal schemes. Among these schemes, two involve heating at 100 °C for 16 h and 16 + 24 h, respectively.
Varsha Singh   +7 more
doaj   +1 more source

Single-shot X-ray absorption spectroscopy at X-ray free electron lasers

open access: yesScientific Reports, 2023
X-ray Absorption Spectroscopy (XAS) is a widely used X-ray diagnostic method for studying electronic and structural properties of matter. At first glance, the relatively narrow bandwidth and the highly fluctuating spectral structure of X-ray Free ...
Marion Harmand   +5 more
doaj   +1 more source

Attosecond x-ray transient absorption spectroscopy in graphene

open access: yesPhysical Review Research, 2021
Real-time observations of the coherent electron dynamics induced by ultrashort light pulses in condensed-matter systems have remained elusive due to limitations in existing attosecond devices.
Giovanni Cistaro   +3 more
doaj   +1 more source

Ambient pressure X-ray absorption spectroscopy at ME2-BL02B of SSRF and its application in catalysis

open access: yesHe jishu, 2021
BackgroundThe traditional soft X-ray absorption spectroscopy (XAS) method can only work under ultra-high vacuum conditions and cannot be used to detect changes in the electronic structure of samples under real conditions.
WANG Wei   +5 more
doaj   +1 more source

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