Results 1 to 10 of about 135,344 (255)

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

Journal 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, Adam P. Tornheim, Xianbo Shi, Mark Wolfman, Yanna Chen, Steve M. Heald, Shelly D. Kelly, George E. Sterbinsky   +7 more
doaj   +2 more sources

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

Journal 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, Nobuo Nakajima, Shigetomo Shiki   +2 more
doaj   +2 more sources

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

Journal 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, Victor Rogalev, Nigel Wilson, Mihai Duta, Christopher J. Reynolds, Jacob Filik, Thomas J. Penfold, Sofia Diaz-Moreno   +7 more
doaj   +2 more sources

Arsenic mineral and compound data as analyzed by X-ray absorption spectroscopy and X-ray diffraction [PDF]

Data in Brief
Here, we present As K-edge X-ray absorption spectroscopy (XAS) data for 28 arsenic minerals and compounds. These minerals and compounds were obtained from mineral dealers, museum collections, and chemical suppliers, and were positively identified by ...
Valerie A. Schoepfer, Heather E. Jamieson, Matthew B.J. Lindsay   +2 more
doaj   +2 more sources

An X‐Ray Absorption Spectroscopy Investigation into the Fundamental Structure of Liquid Metal Alloys [PDF]

Small Science
Gallium and gallium alloys have gained significant interest due to gallium's low melting point. This property allows for gallium‐based catalysts to take advantage of the unique reaction environments only available in the liquid state. While understanding
Jaydon A. Meilak, Karma Zuraiqi, Valerie Mitchell, Bernt Johannessen, Brittany V. Kerr, Pierre H. A. Vaillant, Krystina Lamb, Patjaree Aukarasereenont, Caiden Parker, Taren Cataldo, Francois Malherbe, Andrew J. Christofferson, Torben Daeneke, Rosalie K. Hocking   +13 more
doaj   +2 more sources

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

Structural 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

Crystals, 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, Anil Kumar Paidi, Cheol-Hwee Shim, So-Hee Kim, Sung-Ok Won, Jitendra Pal Singh, Sangsul Lee, Keun-Hwa Chae   +7 more
doaj   +1 more source

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

Scientific 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, Marco Cammarata, Matthieu Chollet, Andrew G. Krygier, Henrik T. Lemke, Diling Zhu   +5 more
doaj   +1 more source

X-ray absorption spectroscopy [PDF]

Photosynthesis Research, 2009
This review gives a brief description of the theory and application of X-ray absorption spectroscopy, both X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS), especially, pertaining to photosynthesis. The advantages and limitations of the methods are discussed.
Yano, Junko, Yachandra, Vittal K.
openaire   +4 more sources

Attosecond x-ray transient absorption spectroscopy in graphene

Physical 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, Luis Plaja, Fernando Martín, Antonio Picón   +3 more
doaj   +1 more source