Multiple Scattering Effects in EXAFS (Extended X-Ray Absorption Fine Structure): Comparison between Theory and Experiment for Pt Metal.

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Abstract:

Extended x-ray absorption fine structure EXAFS model functions have been calculated for the LIII edge in Pt metal. All single, double and triple scattering contributions were taken into account, using a recently developed multiple scattering formalism. Theoretical values for the scattering amplitude, phase, and Debye-Waller factor and the universal curve for the electron mean free path have been used. Comparison to experimental data gives an estimate of the limitations in the current formalism, and shows that multiple scattering effects are important in Pt only at radial distances corresponding to fourth shell nearest neighbors. Author

Author(s):
Biebesheimer, V. A. ; Marques, E. C. ; Sandstrom, D. R. ; Lytle, F. W. ; Greegor, R. B.
Author Organization(s):
WASHINGTON STATE UNIV PULLMAN DEPT OF PHYSICS
Descriptive Note:
Technical rept.,
Supplementary Note:
Prepared in cooperation with Boeing Co., Seattle, WA.
Pagination:
0032

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-5
Contract/Grant Number(s):
N00014-82-K-0530
 Subject Terms
Joint Capability Areas:
JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_1.2.3_Educating; JCA_6.3.3_Spectrum Management; JCA_6.3_Net Management; JCA_6_Net Centric; JCA_4.6_Engineering; JCA_1.3_Human Capital Management; JCA_1.3.2_Personnel Management; JCA_3.2_Engagement; JCA_3_Force Application; JCA_5_Command and Control; JCA_1.2.7_Experimentation; JCA_3.2.1_Kinetic Means
Modernization Areas:
Biotechnology
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*SCATTERING, *PLATINUM, *X RAY ABSORPTION ANALYSIS, EXPERIMENTAL DATA, CRYSTAL STRUCTURE, COMPARISON, THEORY, ELECTRONS, MEAN FREE PATH
Field(s)/Group(s):
Physical Chemistry
Keyword(s):
EXAFS spectra, LIII edge, Debye Waller factor, WUNR359823
Report Date:
1984 May 29