Results 11 to 20 of about 1,034,226 (285)

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

Ultrafast X-ray Spectroscopy of Haem Proteins

open access: yesCHIMIA, 2022
In this article we revisit our recent picosecond and femtosecond X-ray absorption spectroscopy (XAS) and X-ray emission spectroscopy (XES) experiments, probing the ultrafast electronic and geometric evolution of photoexcited haem proteins, namely ...
Camila Bacellar, Majed Chergui
doaj   +1 more source

Modern x-ray spectral methods in the study of the electronic structure of actinide compounds: Uranium oxide UO2 as an example [PDF]

open access: yesNuclear Technology and Radiation Protection, 2004
Fine X-ray photo electron spectral (XPS) structure of uranium dioxide UO2 in the binding energy (BE) range 0-~č40 eV was associated mostly with the electrons of the outer (OVMO) (0-15 eV BE) and inner (IVMO) (15-40 eV BE) valence molecular orbitals ...
Teterin Yury A., Teterin Anton Yu.
doaj   +1 more source

InGaAs x-ray photodiode for spectroscopy

open access: yesMaterials Research Express, 2020
A prototype In _0.53 Ga _0.47 As p ^+ -i-n ^+ x-ray photodiode, fabricated from material grown by metalorganic vapour phase epitaxy, was investigated as a novel detector of x-rays.
M D C Whitaker   +3 more
doaj   +1 more source

X-ray absorption spectroscopy and X-ray diffraction data for molybdenum minerals and compounds

open access: yesData in Brief, 2022
We report Mo K- and LIII-edge X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) data collected for 15 molybdenum minerals and compounds sourced from museum collections, mineral dealers, and chemical suppliers. The samples were finely ground
Valerie A. Schoepfer   +1 more
doaj   +1 more source

XPS and XMCD study of Fe3O4/GaAs interface [PDF]

open access: yes, 2005
Ultrathin Fe oxide films of various thicknesses prepared by post-growth oxidation on GaAs(100) surface have been investigated with X-ray photoelectron spectroscopy (NPS), X-ray absorption spectroscopy (XAS), and X-ray magnetic circular dichroism (XMCD ...
Ahmad, E   +6 more
core   +1 more source

Development of an experimental apparatus to observe ultrafast phenomena by tender X-ray absorption spectroscopy at PAL-XFEL

open access: yesJournal of Synchrotron Radiation, 2022
Understanding the ultrafast dynamics of molecules is of fundamental importance. Time-resolved X-ray absorption spectroscopy (TR-XAS) is a powerful spectroscopic technique for unveiling the time-dependent structural and electronic information of molecules
Yujin Kim   +8 more
doaj   +1 more source

A time-dependent Schr\"odinger equation for molecular core-hole dynamics [PDF]

open access: yes, 2017
X-ray spectroscopy is an important tool for the investigation of matter. X rays primarily interact with inner-shell electrons creating core (inner-shell) holes that will decay on the time scale of attoseconds to few femtoseconds through electron ...
Picón, A.
core   +2 more sources

X-RAY ASTRONOMICAL SPECTROSCOPY [PDF]

open access: yesExploring the Universe, 1980
The current status of the X-ray spectroscopy of celestial X-ray sources, ranging from nearby stars to distant quasars, is reviewed. Particular emphasis is placed on the role of such spectroscopy as a useful and unique tool in the elucidation of the physical parameters of the sources.
openaire   +1 more source

A von Hámos spectrometer for diamond anvil cell experiments at the High Energy Density Instrument of the European X-ray Free-Electron Laser

open access: yesJournal of Synchrotron Radiation, 2023
A von Hámos spectrometer has been implemented in the vacuum interaction chamber 1 of the High Energy Density instrument at the European X-ray Free-Electron Laser facility.
Johannes M. Kaa   +23 more
doaj   +1 more source

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