Re: [Ifeffit] Au-foil (fcc) splitted peak

Dear Wayne and Grant Bunker, thanks a lot for the explanation! To be honest, I didn't know the Ramsauer-Townsend effect before. I think it's ok to show the spektra without subtracting out the scattering phase. As long as I know what's going on and as long as I can explain it it will be fine.

Re: [Ifeffit] particle size and coordination number in Runanoparticles on carbon

Hi Marian, Have you tried what I suggested in the sections you quote below? With a ruthenium metal catalyst, you can probably see some second and perhaps third shell neighbors. The ratio between the coordination numbers for the shells is a measure of particle size that is independent of S02,

Re: [Ifeffit] particle size and coordination numberin Runanoparticles on carbon

Hi Scott, thanks for the suggestion. I've looked through your recent publications and also read your post from Fri, 04 Feb 2011, concerning the R dependence of s02. Comparing the CNs of the 1st and 2nd shell (that are the only ones that are properly resolved in my spectra) makes a lot of sense.

Re: [Ifeffit] particle size and coordination numberin Runanoparticles on carbon

Yes, Marian, that makes sense. Anatoly Frenkel also has a number of good papers based on this kind of approach. While the approaches differ in detail, they are all based on using the ratio of CNs, and thus avoiding the issue of having to extract S02 from a standard. --Scott Calvin Sarah

Re: [Ifeffit] lifetime broadening of pre-edge peaks

How significant are the photoelectron effects in hard X-rays compared with the core-hole effect? What I'm really after is a criterion for determining, at least roughly, how narrow a real, physical feature can be. mam - Original Message - From: vik...@comcast.net To:

Re: [Ifeffit] beamline for Al EXAFS

Hi Alex The SGM beamline at the CLS does fine work at the Al K-edge. However, I'm not familiar with much Al EXAFS work, you would have to ask the beamline scientist, Tom Regier, about that. tom.reg...@lightsource.ca Cheers Lachlan -Original Message- From:

Re: [Ifeffit] beamline for Al EXAFS

For Al:K edge is rather hard to find a dedicated beamline for XAS. Of course are few where it can be measured, like in Bessy, Berlin U41-PGM, or BL1A in UV-SOR, Okazaki, Japan, or BACH in Elettra, Trieste, Itally. I do not how is situation in America, sorry. In this energy region you have to

Re: [Ifeffit] beamline for Al EXAFS

Hi Alex, You might find the list of beamlines at http://www.iucr.org/resources/commissions/xafs/, compiled by Federico Boscherini, a useful way to find a beamline that can acces at the Al K-edge. --Matt On Tue, Oct 11, 2011 at 9:47 AM, Kompch, Alexander alexander.kom...@web.de wrote: Dear

Re: [Ifeffit] beamline for Al EXAFS

Hi Alex, I have make Al K-edge measurements before. Unfortunately, the beamline is no longer available. It was Jumbo (BL III-3) at SSRL. At least, I don't think that Jumbo came back after the upgrade. I have made Total Electron Yield, Partial Electron Yield (Auger), and Fluorescence

Re: [Ifeffit] Gold Nanoparticle first shell fitting

Something is horribly wrong with the data here. I overplotted your reference Au foil against mine, and yours has distorted XANES and too high EXAFS intensity compared to my data. Your amplitude factor is 1.54 which also confirms that something was wrong in the experiment. Perhaps - a