Results 21 to 30 of about 21,237 (271)

Transmission properties of the X-ray window for the SIXA spectrometer [PDF]

, 1996
The ultrathin X-ray entrance window for the spaceborne spectrometer SIXA was characterised using synchrotron radiation. X-ray absorption fine structure near the absorption edges of the constituting elements (aluminium, carbon, oxygen and nitrogen) was ...
Huovelin, J., Tikkanen, T.
core   +2 more sources

Dispersion and stability mechanism of Pt nanoparticles on transition-metal oxides

Scientific Reports, 2022
The heterogeneous catalysts of Pt/transition-metal oxides are typically synthesized through calcination at 500 °C, and Pt nanoparticles are uniformly and highly dispersed when hydrogen peroxide (H2O2) is applied before calcination.
Eun-Suk Jeong, In-Hui Hwang, Sang-Wook Han   +2 more
doaj   +1 more source

Detection the structure-activity relationship of  platinum-bismuth catalyst in methane oxidation by X-ray adsorption fine structure

He jishu, 2021
Background060102PurposeThis study aims to detect the interaction between platinum (Pt) and bismuth (Bi) species and their "structure-activity" relationship in methane oxidation through X-ray absorption fine structure (XAFS) technology.MethodsFirst of all,
NAN Bing, HUANG Yuying, LI Lina
doaj   +1 more source

Development of XAFS theory

Journal of Synchrotron Radiation, 2003
A major goal of theoretical simulations of X-ray absorption fine structure (XAFS) is to provide calculations for the interpretation and analysis of experimental data in terms of geometrical and electronic information. The extended region or EXAFS (50-2000 eV above an absorption edge) contains geometric information about the pair distribution function ...
A L, Ankudinov, J J, Rehr
openaire   +2 more sources

Deglitching procedure for XAFS

Journal of Synchrotron Radiation, 2001
A computer program for eliminating artifacts such as glitches and Bragg peaks of the polarized XAFS spectra is presented. It permits to easily locate and to eliminate from the EXAFS spectra the additional signals originated from the Bragg scattering by crystalline samples.
K N, Zhuchkov, V A, Shuvaeva, K, Yagi, H, Terauchi   +3 more
openaire   +2 more sources

Understanding the role of promoters in catalysis: operando XAFS/DRIFTS study of CeO_x/Pt/Al₂O₃ during CO oxidation [PDF]

, 2017
A combined operando XAFS/DRIFTS study on CeOx/Pt/Al2O3 catalysts has been performed during CO oxidation and provides insights into the changes in nanoparticle structure and adsorbed species during the reaction profile. The onset of CO2 formation is shown
Crabb, E. M., Gianolio, D., Gibson, E. K., Russell, A. E., Thompsett, D., Wells, P. P.   +5 more
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Solid state phase transitions characterized by esr and xas [PDF]

, 2000
Measurements of the relaxation time, of electron systems to a disturbance, by two different spectroscopic methods are examined in detail, with the purpose to establish how the presence of fluctuations near a solid state phase transition are made evident
Acrivos, Juana Vivó
core   +3 more sources

Local structural analyses on molten terbium fluoride in lithium fluoride and lithium–calcium fluoride mixtures [PDF]

, 2010
X-ray absorption fine structure (XAFS) measurements on terbium fluoride in molten lithium fluoride and in molten lithium–calcium fluoride mixtures, (e.g.
Akatsuka, Hiroshi, Bessada, Catherine, Chamelot, Pierre, Matsuura, Haruaki, Nezu, Atsushi, Numakura, Masahiko, Okamoto, Yoshihiro, Pauvert, Olivier, Shimohara, Yasuaki, Shiwaku, Hideaki, Tajima, Keisuke, Yaita, Tsuyoshi, Zanghi, Didier   +12 more
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29Si solid state NMR and Ti K-edge XAFS pre-edge spectroscopy reveal complex behavior of Ti in silicate melts

Progress in Earth and Planetary Science, 2020
An understanding of the mechanisms of Ti is incorporation into silicate glasses and melts is critical for the field of petrology. Trace-element thermobarometry, high-field-strength element partitioning, and the physical properties of magmas are all be ...
Michael R. Ackerson, George D. Cody, Bjorn O. Mysen   +2 more
doaj   +1 more source

Slow crossover in YbXCu4 intermediate valence compounds [PDF]

, 2001
We compare the results of measurements of the magnetic susceptibility Chi(T), the linear coefficient of specific heat Gamma(T)=C(T)/T and 4f occupation number nf(T) for the intermediate valence compounds YbXCu4 (X = Ag, Cd, In, Mg, Tl, Zn) to the ...
A. C. Hewson, A. Hasegawa, A. J. Millis, A. L. Cornelius, A. N. Tahvildar-Zadeh, A. N. Tahvildar-Zadeh, A. Severing, A. Severing, C. H. Booth, C. H. Booth, C. H. Booth, E. A. Goremychkin, E. A. Stern, E. D. Crozier, E. Figueroa, F. Reinert, G. G. Li, J. D. Thompson, J. He, J. J. Joyce, J. L. Sarrao, J. L. Sarrao, J. M. Lawrence, J. M. Lawrence, J. M. Lawrence, J. M. Lawrence, J. M. Lawrence, J. Röhler, N. E. Bickers, N. Grewe, O. O. Bernal, P. Monachesi, P. S. Riseborough, R. Osborn, T. Graf, W. P. Beyermann, Y. Kuramoto, Y. Kuramoto   +37 more
core   +1 more source