Hi, I am working with a molten salt system with Nickel Chloride as one of the components. If you have measured XAS data on anhydrous and hydrated Nickel Chloride at RT and 320C, I would really appreciate if you could share the raw data with me. Thanks in advance for your help! Simer Simerjeet K Gill, Materials Scientist, Nuclear Science and Technology Department, Brookhaven National Lab, Upton, NY 11973 -----Original Message----- From: Ifeffit On Behalf Of ifeffit-request@millenia.cars.aps.anl.gov Sent: Friday, January 11, 2019 12:20 PM To: ifeffit@millenia.cars.aps.anl.gov Subject: Ifeffit Digest, Vol 191, Issue 7 Send Ifeffit mailing list submissions to ifeffit@millenia.cars.aps.anl.gov To subscribe or unsubscribe via the World Wide Web, visit http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit or, via email, send a message with subject or body 'help' to ifeffit-request@millenia.cars.aps.anl.gov You can reach the person managing the list at ifeffit-owner@millenia.cars.aps.anl.gov When replying, please edit your Subject line so it is more specific than "Re: Contents of Ifeffit digest..." Today's Topics: 1. Re: Standard deviation of R value (Matt Newville) 2. Re: Standard deviation of R value (Anatoly Frenkel) 3. Re: Standard deviation of R value (Erin Finley) ---------------------------------------------------------------------- Message: 1 Date: Fri, 11 Jan 2019 10:04:49 -0600 From: Matt Newville To: XAFS Analysis using Ifeffit Subject: Re: [Ifeffit] Standard deviation of R value Message-ID: Content-Type: text/plain; charset="utf-8" Hi Erin, On Fri, Jan 11, 2019 at 8:19 AM Erin Finley wrote:

Hello, I see in many publications the R value reported with a standard deviation. However, when I look at my resulting data from a fit I don't see one listed. I am still new to EXAFS research and so I am wondering where I can get this information. I am assuming I need to calculate it from another parameter I am just not sure which one.

The uncertainties in R are typically in the fit report. But also, we typically refine a "delR" parameter that is R - Reff, where Reff is the distance (half path-lengh) for the scattering path. So, if you don't see an uncertainty reported for R but do see an uncertainty for delR (or whatever parameter name you used), use that. The uncertainty in R will (normally) be the uncertainty in delR. If I'm misunderstanding the question, pleas give more details about what you are doing. --Matt Thanks for your help!

Cheers,

-- Erin Finley PhD Candidate Brgoch Research Group Department of Chemistry University of Houston _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

-- --Matt Newville <newville at cars.uchicago.edu> 630-252-0431