Ebook: EXAFS and Near Edge Structure: Proceedings of the International Conference Frascati, Italy, September 13–17, 1982

The field of X-ray spectroscopy using synchrotron radiation is growing so rapidly and expanding into such different research areas that it is now diffi­ cult to keep up with the literature. EXAFS and XANES are becoming interdis­ ciplinary methods used in solid-state physics, biology, and chemistry, and are making impressive contributions to these branches of science. The present book gives a panorama of the research activity in this field. It contains the papers presented at the International Conference on EXAFS and Near Edge Structure held in Frascati, Italy, September 13-17, 1982. This was the first international conference devoted to EXAFS spectroscopy (Extended X-ray Ab­ sorption Fine Structure) and its applications. The other topic of the con­ ference was the new XANES (X-ray Absorption Near Edge Structure), which in of experimental and theoretical developments finally appears to have terms left its infancy. The applications of EXAFS concern the determination of local structures in complex systems; we have therefore divided the subject matter into differ­ ent parts on various types of materials: amorphous metals, glasses, solu­ tions, biological systems, catalysts, and special crystals such as mixed valence systems and ionic conductors. EXAFS provides unique information for each kind of system, but the analysis of EXAFS data also poses special prob­ lems in each case. General problems of EXAFS data analysis are discussed, as well as developments in instrumentation for X-ray absorption using syn­ chrotron radiation and laboratory EXAFS.

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Content:
Front Matter....Pages I-XII
Introduction. Historical Perspective of EXAFS and Near Edge Structure Spectroscopy....Pages 1-2
Front Matter....Pages 3-3
The Transition Region Between XANES and EXAFS....Pages 4-10
Bond Angle Determination by EXAFS: A New Dimension....Pages 11-21
Role of Inelastic Effects in EXAFS....Pages 22-28
Relaxation Effects in Inner-Shell Photoemission and Absorption....Pages 29-36
Multiple Scattering Calculations of XANES....Pages 37-42
Near Edge Absorption Structure in the Framework of the Multiple Scattering Model. Potential Resonance or Barrier Effects?....Pages 43-56
Bond Length Determination Using XANES....Pages 57-61
Double Ionization in Inner Shells....Pages 62-64
Front Matter....Pages 65-65
The Reliability of ab initio Calculations in Extracting Structural Information from EXAFS....Pages 66-72
EXAFS Analysis in Anisotropic Systems....Pages 73-79
EXAFS in Metallurgy....Pages 80-86
The Effect of the Noise on the Structural Parameters Deduced by EXAFS....Pages 87-90
Debye-Waller Factors in R-Space Analysis....Pages 91-95
Thickness Effects on the Determination of EXAFS Amplitudes....Pages 96-97
Thickness Effects in X-Ray Absorption Measurements....Pages 98-99
Interference and Multiple Scattering Effects in Porphyrinic Complexes....Pages 100-102
Multiple Scattering Effects in the EXAFS of Fe and TiFe....Pages 103-106
A Model Comparision Between EXAFS and X-Ray Scattering....Pages 107-109
EXAFS Database and Program Library....Pages 110-111
Front Matter....Pages 65-65
Regular Methods in Real-Space Analysis of EXAFS....Pages 112-113
Regular Methods of Solving Inverse Problems in Spectroscopy....Pages 114-115
Front Matter....Pages 117-117
XANES Spectroscopy for Local Structures in Complex Systems....Pages 118-129
Experimental and Theoretical XANES Studies of Selected Vanadium Compounds....Pages 130-134
X-Ray Absorption of Crystalline Titanium Compounds: Evidence of Electronic Relaxation Effects....Pages 135-140
Application of XANES to the Study of AsF5-Graphite Intercalation Compounds....Pages 141-143
XANES of 3d Elements: Effects of Local Symmetry Evidenced Using High-Resolution Spectra....Pages 144-146
The Adsorption of Oxygen on Nickel (001) Studied by XANES....Pages 147-150
Near Edge Structure in Cerium and Cerium Compounds....Pages 151-153
XANES at High-Pressure Phase Transitions....Pages 154-156
Near Edge and EXAFS Studies of Amorphous Pd-Ge and Ni-Zr Alloys....Pages 157-161
L Edge Adsorption Systematics of Some Transition-Metal (Pd, Ag), Main-Group-Metal (Sn, In) and Ionic (CsI) Systems....Pages 162-164
Study of XANES at the K Absorption Edge in Some 3d Compounds....Pages 165-167
High-Resolution Analysis of the L2,3 White Lines of Pd....Pages 168-170
Front Matter....Pages 171-173
Structural Studies of Superionic Conduction....Pages 174-176
High-Pressure EXAFS Study on Mixed Valent SmS....Pages 177-179
Front Matter....Pages 181-181
Peculiarities of the EXAFS Spectra of III–VI Layered Compounds....Pages 182-186
EXAFS Studies of Disorder in Crystalline Solids....Pages 187-189
EXAFS Studies of Krypton Atoms in Matrices of Argon and Nitrogen....Pages 190-192
EXAFS and XANES Investigations of Trace V and Ti in Coal....Pages 181-181
Characterization of the Valence States of Iron in Spinels by X-Ray Absorption and Emission Spectroscopy....Pages 193-199
High-Pressure Study of LIII Absorption Edges of Rare-Earth Mixed Valence Systems....Pages 200-202
EXAFS of Antimony LIII Edge of Ferroelectric SbSI Above the Phase-Transition Temperature....Pages 203-205
EXAFS Study of the Disorder Effect Induced in Layered MnPS3 by Intercalation of Cations....Pages 206-209
Oxidation States of Nickel in Reduced Phases of LaNiO3 by XANES and EXAFS....Pages 210-212
Front Matter....Pages 213-215
Application of EXAFS and XANES to Structural Studies of Metallic Glasses....Pages 216-218
EXAFS and X-Ray Diffraction in Solutions....Pages 219-221
Local Order in Oxide Glasses....Pages 222-223
EXAFS and XANES Spectra of Calcium Silicate Glasses....Pages 224-227
EXAFS and XANES Investigation of the Coordination of Technetium in Borosilicate Glass....Pages 228-230
Germanium Environment in Simple and Multi-Component Oxide Glasses....Pages 231-231
Local Structure in Mixed Electrolytes....Pages 232-239
Elastic Core Effect in Isovalent Solid Solutions....Pages 240-247
Front Matter....Pages 248-255
Transition-Metal and Metalloid Contributions to EXAFS in Amorphous Alloys and Crystalline Compounds....Pages 256-260
EXAFS Studies of Glassy Ni66B33: A Multi-Shell Modeling of the Ni-Ni Distribution....Pages 261-264
Front Matter....Pages 265-267
EXAFS on Catalysis....Pages 268-270
EXAFS Studies of Metal-Ion Exchanged Layer Structures....Pages 271-273
Fluorescence EXAFS of MgCl2-Supported Titanium Trichloride....Pages 274-276
An EXAFS Study of a Highly Dispersed Rh/Al2O3 Catalyst....Pages 231-231
EXAFS Investigation of TiO2-V2O5 Catalysts....Pages 277-279
Correlation Between Catalytic Activity and EXAFS Studies of “Classical” and “Inorganic-Cluster-Derived” Platinum Catalysts....Pages 280-283
EXAFS Studies of Industrial Pt/Al2O3 Catalysts....Pages 284-289
EXAFS Study of Short-Range Order in Transition Aluminas....Pages 290-291
Zeolite-Supported Rh Catalysts for Methanol Carbonylation: X-Ray Absorption Measurements....Pages 292-294
Front Matter....Pages 295-295
EXAFS of Calcium in Biological Systems....Pages 296-302
EXAFS Studies of Zinc and Copper in Chemical and Biochemical Systems....Pages 303-306
A XANES Study of Co(II) in Cobalt Model Compounds and in Some Cobalt-Substituted Enzyme....Pages 307-309
Mn(II) Binding to Nucleotides and Nucleic Acids....Pages 310-312
On the Investigation by EXAFS Spectroscopy of a Selenocarbonyl Complex (CSe = Fe(II)TPP)....Pages 313-315
X-Ray Iron K Edge of Human Hemoglobins....Pages 316-318
Front Matter....Pages 319-320
XANES of Calmodulin: Differences and Homologies Between Calcium-Modulated Proteins....Pages 321-324
Nickel-Containing Enzyme: Urease....Pages 325-327
Front Matter....Pages 329-329
Anomalous X-Ray Scattering and its Relationship to EXAFS....Pages 330-336
Simultaneous Measurements of the Real and Imaginary Parts of the X-Ray Anomalous Dispersion Using X-Ray Interferometers....Pages 337-341
Interferometric Measurement of Absorption ?(E) and Dispersion ?’ (E) at the K Edge of Copper....Pages 342-344
Anomalous Scattering Factors from X-Ray Absorption Data by Kramers-Kronig Analysis....Pages 345-348
Front Matter....Pages 349-351
Extended Energy Loss Fine Structure (EELFS) Technique: Bulk and Surface Investigation....Pages 352-354
Extended Fine Structure in APS....Pages 329-329
Geometrical Structure of Graphitic Carbon on Ni(111) Studied by Extended Energy Loss Fine Structure Spectroscopy (EELFS)....Pages 355-357
Oxygen on Ni(100): A Surface-Extended Energy Loss Fine Structure (SEELFS) Study....Pages 358-360
Front Matter....Pages 361-361
Laboratory EXAFS Systems....Pages 362-372
Time-Resolved EXAFS....Pages 373-375
A Versatile Spectrometer for Laboratory EXAFS Studies....Pages 376-377
A Sample Cell for in situ EXAFS Measurements....Pages 378-380
SSRL Beam Line Wunder....Pages 381-381
Back Matter....Pages 382-390
....Pages 391-393