Results 181 to 190 of about 13,531 (230)

NEXAFS and XPS studies of nitrosyl chloride

Physical Chemistry Chemical Physics, 2015
The electronic structure of nitrosyl chloride (ClNO) has been investigated in the gas phase by X-ray Photoelectron (XPS) and Near Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy at the Cl 2p, Cl 2s, N 1s and O 1s edges in a combined experimental and theoretical study.
SCHIO, LUCA, C. Li, S. Monti, P. Salén, V. Yarsyna, R. Feifel, M. Alagia, R. Richter, S. Falcinelli, STRANGES, Stefano, V. Zhaunerchyk, V. Carravetta   +11 more
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Analytical theory of NEXAFS from diatomic molecules

Physical Review B, 1996
Analytical expressions are derived for both the ${\mathrm{\ensuremath{\pi}}}^{\mathrm{*}}$ and ${\mathrm{\ensuremath{\sigma}}}^{\mathrm{*}}$ resonances in near-edge x-ray-absorption fine-structure (NEXAFS) spectra from diatomic molecules. A simple criterion is formulated for extracting structural parameters (e.g., the bond lengths) of such molecules ...
, Shneerson, , Tysoe, , Saldin
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NEXAFS spectromicroscopy of suspended carbon nanohorns

Chemical Physics Letters, 2013
Abstract We demonstrate that near-edge X-ray-absorption fine-structure spectroscopy combined with full-field transmission X-ray microscopy can be used to study the electronic structure of suspended carbon nanohorns. Based on reports of electronic structure calculations additional spectral features observed in the π region of the NEXAFS spectrum ...
Carla Bittencourt, Xiaoxing Ke, Gustaaf Van Tendeloo, Nikos Tagmatarchis, Peter Guttmann   +4 more
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An efficient first principles method for molecular pump-probe NEXAFS spectra: Application to thymine and azobenzene.

Journal of Chemical Physics, 2018
Pump-probe near edge X-ray absorption fine structure (PP-NEXAFS) spectra of molecules offer insight into valence-excited states, even if optically dark.
C. Ehlert, M. Gühr, P. Saalfrank
semanticscholar   +1 more source

The NEXAFS of biological calcium phosphates

Review of Scientific Instruments, 1995
The absorption cross section of a number of calcium salts has been assessed at the calcium L edge by measuring the total electron yield (TEY) at the NSLS U13UA beamline. TEY was used because of distortions introduced by instrumentation when using a transmission signal. The effect of these distortions has been evaluated and is presented.
C. J. Buckley, S. J. Bellamy, X. Zhang, G. Dermody, S. Hulbert   +4 more
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NEXAFS Spectra of Polymer‐nanocarbon Composites

Fullerenes, Nanotubes and Carbon Nanostructures, 2008
The near edge X‐ray absorption fine structure (NEXAFS) spectra of polymethylmetacrylate (PMMA)‐fullerene (Fu) C60 and PMMA‐multiwall nanotubes (MWNT) composites treated at different temperatures are compared to the thermal desorption (TD) mass‐spectrometric (MS) spectra.
A. O. Pozdnyakov, M. M. Brzhezinskaya, A. S. Vinogradov, K. Friedrich   +3 more
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Recent progress in EXAFS/NEXAFS spectroscopy

Journal of Electron Spectroscopy and Related Phenomena, 2014
Abstract We briefly review the basic theory and recent applications in the X-ray absorption fine structure (XAFS) spectroscopy. First we discuss a dressed one-electron XAFS formula starting from many-body scattering theory, where important many-body effects, intrinsic and extrinsic losses, and optical potential are naturally introduced. Next multiple
Akihiro Koide, Takashi Fujikawa, Nobuyuki Ichikuni   +2 more
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New developments in NEXAFS/EXAFS theory

Catalysis Today, 1998
Abstract Recent advances in the theory of X-ray absorption fine structure (XAFS) are reviewed. Modern ab initio multiple-scattering (MS) calculations now provide an accurate, unified treatment of XAFS, encompassing both EXAFS (extended-XAFS), NEXAFS (near-edge XAFS) and XANES (X-ray absorption near-edge structure).
J.J. Rehr, A. Ankudinov, S.I. Zabinsky
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NEXAFS study of 2LiF–MgB2 composite

International Journal of Hydrogen Energy, 2012
Abstract Synthesis of lithium borohydridofluorides may pave a new way to pursue improved hydrogen storage properties of LiBH 4 as reversible hydrogen storage materials that fit the fuel cell application. The main products of the hydrogen absorption by 2LiF–MgB 2 composite are MgF 2 and LiBH 4 .
I. Saldan, J.M. Ramallo-López, F.G. Requejo, K. Suarez-Alcantara, J. Bellosta von Colbe, J. Avila   +5 more
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NMR and NEXAFS Study of Various Graphite Fluorides

The Journal of Physical Chemistry C, 2013
Graphite fluorides with different structural types (CyF)n (y = 2.5, 2, and 1) and room temperature graphite fluorides were studied by solid state NMR and NEXAFS. Data extracted from those two techniques are complementary, providing information about the C-F bonding and the hybridization character of the carbon atom valence states.
Ahmad, Yasser, Dubois, M., Guérin, K., Hamwi, A., Fawal, Z., P. Kharitonov, A., V. Generalov, A., Yu. Klyushin, A., A. Simonov, K., Vinogradov, N.A., A. Zhdanov, I., B. Preobrajenski, A., S. Vinogradov, A.   +12 more
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