Results 211 to 220 of about 135,344 (255)

Magnetic X-ray absorption spectroscopy

Journal of Alloys and Compounds, 1999
Abstract Basic principles of the magnetisation dependent effects of the absorption of circularly polarised X-rays are discussed. At the inner core absorption edges the effect is manifested in a difference of absorption coefficients for the right and left circularly polarised quanta in ferromagnetic media and is called X-ray magnetic circular ...
Kapusta, Cz., Fischer, P., Schütz, G.
openaire   +2 more sources

X‐ray absorption spectroscopy

Berichte der Bunsengesellschaft für physikalische Chemie, 1987
AbstractThe X‐ray absorption near‐edge structure (XANES) of transition metal oxides is analyzed in terms of scattering resonances from neighboring atoms. Spectra from reference compounds of simple, known structure were used to facilitate identification of XANES peaks with scattering from specific coordination spheres.
openaire   +1 more source

Tomographic x-ray absorption spectroscopy

SPIE Proceedings, 2004
Hard x-ray absorption spectroscopy is combined with scanning microtomography to reconstruct full near edge spectra of an elemental species at each location on an arbitrary virtual section through a sample. These spectra reveal the local concentrations of different chemical compounds of the absorbing element inside the sample and give insight into the ...
Christian G. Schroer, Marion Kuhlmann, Til Florian Gunzler, Bruno Lengeler, Matthias Richwin, Bernd Griesebock, Dirk Lutzenkirchen-Hecht, Ronald Frahm, Eric Ziegler, Ali Mashayekhi, Dean Haeffner, Jan-Dierk Grunwaldt, Alfons Baiker   +12 more
openaire   +1 more source

Glancing Angle X-Ray Absorption Spectroscopy

Advances in X-ray Analysis, 1990
AbstractThe use of glancing angles of incidence enables X-ray Absorption Spectroscopy to be measured as a function of depth from the surface of a material into the bulk. As x-rays rather than photoelectrons are detected, a UHV environment is not required and instead surfaces and interfaces can be examined under realistic operational conditions.
openaire   +1 more source

X-ray Absorption Spectroscopy: Soft X-ray Absorption Methods

2004
Probing events that occur in a catalyst under working conditions is a very important scientific topic. In order to identify reaction intermediates and active sites in a catalyst, characterization techniques should be further developed and consequently the design and construction of appropriate in-situ cells and reactor probes are inevitable.
Knop-Gericke, A., de Groot, F., van Bokhoven, J., Ressler, T.   +3 more
openaire   +1 more source

X-Ray Absorption Spectroscopy of Metalloproteins

2018
X-ray absorption spectroscopy (XAS) has been widely used as a powerful local structural tool for studying the metal binding sites in metalloproteins, owing to its element specificity, chemical sensitivity, and minimum requirement for sample preparation.
openaire   +2 more sources

Introduction to X-Ray Absorption Spectroscopy

2014
X-ray Absorption Fine Structure (XAFS) contains original information on the local properties of materials. After a general introduction to the X-ray absorption process, the attention is here focussed on the extended fine structure (EXAFS). The main approximations that lead to a relatively simple and effective interpretation of EXAFS spectra are ...
openaire   +3 more sources

Shrinking X-ray absorption spectroscopy

C&EN Global Enterprise, 2018
X-ray absorption spectroscopy is a powerful method used by chemists, biologists, and materials scientists to analyze solids, liquids, and gases. The technique can identify elements and provides information about oxidation states, bonding coordination, and other structural features.
openaire   +1 more source

X-ray Absorption Spectroscopy of CuO2 Chains

Journal of Low Temperature Physics, 2003
The electronic structure of various edge-shared chain compounds A1−x CuO2 (A=Ca,Sr,Ba) was studied by O-K and Cu-L3 x-ray absorption spectroscopy and exact diagonalizations techniques. The doping-dependent behaviour in these chains differs from that of conventional 2D Cu-O networks of cornershared CuO4 plaquettes due to the much smaller inter-plaquette
Drechsler, S.L., Hu, Z., Malek, J., Rosner, H., Neudert, R., Knupfer, M., Golden, M.S., Fink, J.   +7 more
openaire   +3 more sources

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly