Topographic EXAFS.

reportActive / Technical Report | Accession Number: ADA137116 | Open PDF

Abstract:

Contrast near an absorption edge has been observed in synchrotron radiation topographs obtained with white radiation due to the variation of wavelength across an image. Variations in absorption, due to the fluctuations in the EXAFS spectrum, appear as fringes parallel to the edge. The contrast has been measured densitometrically for a Nb specimen and excellent agreement obtained with a conventional EXAFS spectrum. The exposure time for the topograph was 25 s. The spectral characteristics of this technique are analysed and shown to be comparable with standard EXAFS spectroscopy. The method provides a means of extracting microstructural and spectroscopic information simultaneously and point-by-point on one sample. Possible applications are discussed.

Author(s):
Bowen, D. K. ; Stock, S. R. ; Davies, S. T. ; Pantos, E. ; Birnbaum, H. K.
Author Organization(s):
DARESBURY LAB (ENGLAND)*
Descriptive Note:
Technical rept.,
Pagination:
0014

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
DL/SCI/P399E
Contract/Grant Number(s):
N00014-83-K-0468
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management; JCA_6_Net Centric; JCA_6.3_Net Management; JCA_8.2.4_Leverage Capacities and Capabilities of Security Establishments; JCA_8.2_Shape; JCA_8_Building Partnerships; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_1.2.3_Educating; JCA_3.2_Engagement; JCA_3_Force Application; JCA_4.7.2_Installation Services; JCA_4.7_Base and Installations Support; JCA_6.4.1_Secure Information Exchange; JCA_3.2.1_Kinetic Means
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*X RAY SPECTROSCOPY, *X RAY ABSORPTION ANALYSIS, METAL CRYSTALS, NIOBIUM, TOPOGRAPHY, MICROSTRUCTURE, X RAY SPECTRA, UNITED KINGDOM
Field(s)/Group(s):
Properties of Metals and Alloys, Crystallography
Keyword(s):
*EXAFS(Extended X ray Absorption Fine Structure), Synchrotron radiation
Report Date:
1983 Nov 01