Talks by Bruce

EXAFS Analysis Using FEFF and FEFFIT

The course materials for my very first EXAFS training course, which I developed back in 2000.

A Practical Introduction to Multiple Scattering Theory

This began as a lecture developed for the VII International School and Symposium on Synchrotron Radiation in Natural Science in Zakopane, Poland, 8-13 June, 2004 and for a four-day workshop on EXAFS Data Collection and Analysis at the National Synchrotron Light Source, June 22--25, 2004. I have given this lecture many times since, occasionally modifying and upgrading it. The current version is written using Beamer.

A companion article to the talk from Zakopane was published as B. Ravel, Journal of Alloys and Compounds, 401:1-2 (2005) pp. 118-126. Here's the Elsevier ScienceDirect link. The Document Object Identifier is 10.1016/j.jallcom.2005.04.021.

• PDF file

Multiple Scattering Theory and Third Generation Synchrotron Science

This lecture was presented at the Workshop on X-Ray Absorption Spectroscopy and Micro-Spectroscopic Techniques, 20-21 February, 2006 at the Swiss Light Source.

• PDF file

• LaTeX source tarball

Using XAFS in Unusual Ways

This is a talk on some of my then current (as of October 2004) research interests that I prepared for visits to Argonne and SSRL. This covers analysis I have done on Barium Tanatalum Oxynitride using an interesting theory-based analytical approach. The second half of the talk is about work I am doing with an astrophysicist collaborator to see if we can determine anything about the interstellar medium using satellite observations of far-away X-ray sources. Papers were written on both topics:

• Role of local disorder in the dielectric response of BaTaO2N, B. Ravel, Y-I. Kim, P.M. Woodward, and C.M. Fang, Physical Review B, 73, p. 184121 (2006)

• Determining the grain composition of the interstellar medium with high resolution X-ray spectroscopy. J.C. Lee and B. Ravel, The Astrophyscial Journal, 622:2,1 (2005) pp. 970-976.

• PDF file

• Upload new attachment "uxuw.tar.gz"

A Synchrotron Spectroscopy Primer

This is a talk given at the lunchtime seminar in the Biosciences Division at Argonne on January 16, 2006. It's a fairly simple talk, providing a broad introduction to absorption and fluorescence spectroscopy for a crowd that, I presumed, knew little about inner shell spectroscopy or synchrotron science. It's a bit tounge-in-cheek and certainly not rigorous.

• Open Document Presentation file

• PDF file

Posters from the XAFS13 Conference

The XAFS13 Conference was held July 9-14, 2006 in Stanford, CA, USA. I presented three posters. Here they are as PDF and as the Open Document Format presentation file.

1. A pH-dependent X-ray Absorption Spectroscopy study of U adsorption to bacterial cell walls. <PDF 0.7MB> <ODP 0.4MB>

2. The difficult chore of measuring coordination by EXAFS <PDF 1.2MB> <ODP 1.7MB>

3. Solid state astrophysics using the techniques of X-ray Absorption Spectroscopy <PDF 2.1MB> <ODP 2.3MB>

An ARTEMIS example explaining multiple k-weight and multiple data set fitting

This is one of the talks that I presented at a workshop on EXAFS and EXAFS analysis at the Physics Institute of the Polish Academy of Sciences that was held November 13-15, 2006. In this example, I use some data from one of my research projects to explain the concepts of multiple k-weights and multiple data sets in EXAFS analysis.

• Open Document Presentation file

• PDF file

I believe in the essential decency and fairness of the American people. This does 
not mean, however, that I believe our leaders and our voters always to be of sound 
judgment.  Democracy does not guarantee wisdom or virtue; it guarantees only the
principles of majority rule and freedom of choice. And freedom of choice includes, 
whether we like it or not, the right to be wrong. We can only hope that from time 
to time our leaders will be right.

Now is not such a time.

                    George McGovern writing in the December 2002 Harper's Magazine