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Title: Comparison of EXAFS Foil Spectra from Around the World

Abstract

The EXAFS spectra of Cu and Pd foil from many different beamlines and synchrotrons are compared to address the dependence of the amplitude reduction factor (S{sub 0}{sup 2}) on beamline specific parameters. Even though S{sub 0}{sup 2} is the same parameter as the EXAFS coordination number, the value for S{sub 0}{sup 2} is given little attention, and is often unreported. The S{sub 0}{sup 2} often differs for the same material due to beamline and sample attributes, such that no importance is given to S{sub 0}{sup 2}-values within a general range of 0.7 to 1.1. EXAFS beamlines have evolved such that it should now be feasible to use standard S{sub 0}{sup 2} values for all EXAFS measurements of a specific elemental environment. This would allow for the determination of the imaginary energy (Ei) to account for broadening of the EXAFS signal rather than folding these errors into an effective S{sub 0}{sup 2}-value. To test this concept, we model 11 Cu-foil and 6 Pd-foil EXAFS spectra from around the world to compare the difference in S{sub 0}{sup 2}- and Ei-values.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Advanced Light Source Division
OSTI Identifier:
985838
Report Number(s):
LBNL-3699E
TRN: US1006233
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: 14th International Conference on X-Ray Absorption Fine Structure (XAFS14)
Country of Publication:
United States
Language:
English
Subject:
47; ABSORPTION; AMPLITUDES; COORDINATION NUMBER; FINE STRUCTURE; SPECTRA; SYNCHROTRONS

Citation Formats

Kelly, S D, Bare, S R, Greenlay, N, Azevedo, G, Balasubramanian, M, Barton, D, Chattopadhyay, S, Fakra, S, Johannessen, B, Newville, M, Pena, J, Pokrovski, G S, Proux, O, Priolkar, K, Ravel, B, and Webb, S M. Comparison of EXAFS Foil Spectra from Around the World. United States: N. p., 2010. Web.
Kelly, S D, Bare, S R, Greenlay, N, Azevedo, G, Balasubramanian, M, Barton, D, Chattopadhyay, S, Fakra, S, Johannessen, B, Newville, M, Pena, J, Pokrovski, G S, Proux, O, Priolkar, K, Ravel, B, & Webb, S M. Comparison of EXAFS Foil Spectra from Around the World. United States.
Kelly, S D, Bare, S R, Greenlay, N, Azevedo, G, Balasubramanian, M, Barton, D, Chattopadhyay, S, Fakra, S, Johannessen, B, Newville, M, Pena, J, Pokrovski, G S, Proux, O, Priolkar, K, Ravel, B, and Webb, S M. 2010. "Comparison of EXAFS Foil Spectra from Around the World". United States. https://www.osti.gov/servlets/purl/985838.
@article{osti_985838,
title = {Comparison of EXAFS Foil Spectra from Around the World},
author = {Kelly, S D and Bare, S R and Greenlay, N and Azevedo, G and Balasubramanian, M and Barton, D and Chattopadhyay, S and Fakra, S and Johannessen, B and Newville, M and Pena, J and Pokrovski, G S and Proux, O and Priolkar, K and Ravel, B and Webb, S M},
abstractNote = {The EXAFS spectra of Cu and Pd foil from many different beamlines and synchrotrons are compared to address the dependence of the amplitude reduction factor (S{sub 0}{sup 2}) on beamline specific parameters. Even though S{sub 0}{sup 2} is the same parameter as the EXAFS coordination number, the value for S{sub 0}{sup 2} is given little attention, and is often unreported. The S{sub 0}{sup 2} often differs for the same material due to beamline and sample attributes, such that no importance is given to S{sub 0}{sup 2}-values within a general range of 0.7 to 1.1. EXAFS beamlines have evolved such that it should now be feasible to use standard S{sub 0}{sup 2} values for all EXAFS measurements of a specific elemental environment. This would allow for the determination of the imaginary energy (Ei) to account for broadening of the EXAFS signal rather than folding these errors into an effective S{sub 0}{sup 2}-value. To test this concept, we model 11 Cu-foil and 6 Pd-foil EXAFS spectra from around the world to compare the difference in S{sub 0}{sup 2}- and Ei-values.},
doi = {},
url = {https://www.osti.gov/biblio/985838}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jul 16 00:00:00 EDT 2010},
month = {Fri Jul 16 00:00:00 EDT 2010}
}

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