The Thickness Effect in X-ray Absorption Edges of Metals and Alloys

1976 ◽  
Vol 30 (4) ◽  
pp. 405-410 ◽  
Author(s):  
Douglas M. Pease
Keyword(s):  
Fine Structure ◽  
Relative Error ◽  
Absorption Edge ◽  
Metals And Alloys ◽  
Window Function ◽  
Thickness Effect ◽  
X Ray ◽  
X Ray Absorption ◽  
Simplified Form ◽  
Absorption Edges

The thickness effect is treated using a simplified form for the window function and the absorption edge. It is shown that for the low absorbing portion of the K edge the relative error caused by the tail of the window function becomes larger, rather than vanishing, in the limit of zero thickness foils. A means is described and experimentally demonstrated for separating changes in K absorption edge fine structure due to alloying from those due to the thickness effect.

Chemical Effect on X-Ray Absorption-Edge Fine Structure

1966 ◽  
pp. 376-392 ◽  
Author(s):  
E. W. White ◽  
H. A. McKinstry
Keyword(s):  
Fine Structure ◽  
Absorption Edge ◽  
Chemical Effect ◽  
X Ray ◽  
X Ray Absorption

X-ray absorption edge fine structure spectroscopy of the active site haem of cytochrome c

Nature ◽  
1979 ◽  
Vol 277 (5692) ◽  
pp. 150-151 ◽  
Author(s):  
A. LABHARDT ◽  
C. YUEN
Keyword(s):  
Fine Structure ◽  
Cytochrome C ◽  
Absorption Edge ◽  
Active Site ◽  
X Ray ◽  
X Ray Absorption

XAFS Study of Molten ZrCl4 in LiCl-KCl Eutectic

2002 ◽  
Vol 57 (5) ◽  
pp. 277-280 ◽  
Author(s):  
Yoshihiro Okamoto ◽  
Haruhiko Motohashi
Keyword(s):  
Fine Structure ◽  
Coordination Number ◽  
Curve Fitting ◽  
Absorption Edge ◽  
Local Structure ◽  
Molten Mixture ◽  
X Ray ◽  
Absorption Fine ◽  
Curve Fitting Analysis ◽  
X Ray Absorption

The local structure of motlen ZrCl4 in LiCl-KCl eutectic was investigated by using an X-ray absorption fine structure (XAFS) of the Zr K-absorption edge. The nearest Zr4+-Cl- distance and coordination number from the curve fitting analysis were (2.51±0.02) Å and 5.9±0.6, respectively. These suggest that a 6-fold coordination (ZrCl6)2- is predominant in the molten mixture.

Separating overlapping x-ray-absorption edges using diffraction anomalous fine-structure

1999 ◽  
Vol 12 (3) ◽  
pp. 30-33
Author(s):  
B. Ravel ◽  
C. E. Bouldin ◽  
H. Renevier
Keyword(s):  
Fine Structure ◽  
X Ray ◽  
X Ray Absorption ◽  
Absorption Edges

Use of LI and LII absorption edges in elemental quantitative analysis by x-ray absorption-edge spectrometry

1984 ◽  
Vol 56 (14) ◽  
pp. 2816-2818 ◽  
Author(s):  
Eladio. Vila ◽  
Joaquin. Bermudez-Polonio ◽  
Teresa. Gancedo
Keyword(s):  
Quantitative Analysis ◽  
Absorption Edge ◽  
X Ray ◽  
X Ray Absorption ◽  
Absorption Edges

An EXAFS study of photographic development in thermographic films

2007 ◽  
Vol 22 (2) ◽  
pp. 122-125 ◽  
Author(s):  
T. N. Blanton ◽  
D. R. Whitcomb ◽  
S. T. Misture
Keyword(s):  
Fine Structure ◽  
Absorption Edge ◽  
Thermal Processing ◽  
Real Space ◽  
Metallic Silver ◽  
X Ray ◽  
The Real ◽  
Edge Location ◽  
Exafs Study ◽  
X Ray Absorption

Silver K edge extended X-ray absorption fine structure (EXAFS) spectroscopy of films containing silver behenate (AgBeh) in the unprocessed, fully processed, and step-processed states has been performed. The results of the EXAFS analysis indicate that the intensity for the real-space peak for the Ag-O distance (∼2.3 Å) decreases while the real-space peak for the Ag-Ag distance (∼2.9 Å) grows with increasing thermal processing of the film. The changes observed in the real-space EXAFS signal indicate the growth of metallic silver at the expense of AgBeh. The X-ray absorption near-edge spectroscopy (XANES) portion of the signal shows that the absorption edge position varies stepwise, with unprocessed films and pure AgBeh having an edge location at 25 506 eV, films processed from steps 1 through 10 have an absorption edge at 25 508 eV, and the fully processed film has an edge location at 25 512 eV.

scholarly journals X-ray Absorption Fine Structure Combined with X-ray Fluorescence Spectrometry. Improvement of Spectral Resolution at the Absorption Edges of 9−29 keV

2006 ◽  
Vol 78 (6) ◽  
pp. 2075-2075
Author(s):  
Yasuo Izumi ◽  
Hiroyasu Nagamori ◽  
Fumitaka Kiyotaki ◽  
Dilshad Masih ◽  
Taketoshi Minato ◽  
...  
Keyword(s):  
Fine Structure ◽  
Spectral Resolution ◽  
Fluorescence Spectrometry ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption ◽  
Absorption Edges

Exafs Evidence For Atom Location In Icosahedral TiZrNi And Hydrogenated TiZrNi Quasicrystals

1998 ◽  
Vol 553 ◽  
Author(s):  
A. Sadoc ◽  
J. K. Kim ◽  
K.F. Kelton
Keyword(s):  
Fine Structure ◽  
Metal Atom ◽  
Hydrogen Atoms ◽  
X Ray ◽  
Absorption Fine ◽  
Different Types ◽  
X Ray Absorption ◽  
Absorption Edges

AbstractWe present results from the first extended X-ray absorption fine-structure studies in a Ti/Zrbased quasicrystal. The icosahedral Ti53Zr27Ni20 phase and an icosahedral Ti45Zr38Ni17 phase that also contains 1.7 hydrogen atoms for each metal atom were investigated. Experiments performed above the Ti, Ni and Zr K absorption edges have allowed to identify different types of atomic subshells around the Ti, Ni and Zr atoms. Significant differences are observed between these two quasicrystalline alloys, suggesting preferential sites for the hydrogen atoms.

Experimental determination of the fine structure of X-ray absorption edges of the polyatomic vapours GeCl4 and AsCl3

Physica ◽  
1934 ◽  
Vol 1 (7-12) ◽  
pp. 889-894 ◽  
Author(s):  
D. Coster ◽  
G.H. Klamer
Keyword(s):  
Fine Structure ◽  
Experimental Determination ◽  
X Ray ◽  
X Ray Absorption ◽  
Absorption Edges
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