- Ifeffit - millenia.cars.aps.anl.gov

Can't get access to WebAtoms via http://millenia.cars.aps.anl.gov/webatoms/
by Mangold, Stefan (IPS) 30 Sep '24

30 Sep '24

Dear all, I have a problem to open WebAtoms via http://millenia.cars.aps.anl.gov/webatoms/ <http://millenia.cars.aps.anl.gov/webatoms/>, is there another server available ? best regards Stefan Mangold

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Help request
by Khadidja Elkobra Benzahra Belkacem 13 Sep '24

13 Sep '24

Good morning professor, Would you please help me in this question. I have EXAFS data of an unknown new structure, the CIF file wasn't provided to me neither the samples of 3 different doping (the ones which the EXAFS data belong) . Is it possible to refine the coordination number of each scattering path without having any information about the standard value of S02 of this specific material measured in the same experimental condition , or even without having the exact CIF file of this alloy with 3 different doping ratios. Kind regards -- *Fai crescere le giovani ricercatrici e i giovani ricercatori*** *con il 5 per mille alla Sapienza* Scrivi il codice fiscale dell'Università *80209930587 **Cinque per mille <https://urldefense.us/v3/__https://www.uniroma1.it/it/node/23149__;!!G_uCfs… >*

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Question about rare noise in Pb spectra at high k
by Otal Eugenio 13 Sep '24

13 Sep '24

Dear all, I measured Na2Ti3O7 with Pb replacing Na. I measured the L3 edge in transmission mode. Mainly all samples have noise at k>8 but two of them show the "same noise". Pb0375 replaces 18% of Na by Pb while Pb1000 replaces 50%. I would like to know if this is a signal to pay attention or just cut it off. I am planning to measure at low temperatures in the next call. Any suggestion is welcome. I also attach the csv of the samples and PbO2 std. Best regards. [image: image.png] (^ㅇᆽㅇ^)(=˃ᆺ˂=)(=🝦 ༝ 🝦=) Eugenio H. OTAL Assistant Professor Research Initiative for Supra Materials, Shinshu University 4-17-1 Wakasato, Nagano city. 380-8553, Japan eugenio_otal(a)shinshu-u.ac.jp ¯\_(ツ)_/¯ ¯\_(ツ)_/¯ Who is John Galt? ¯\_(ツ)_/¯ ¯\_(ツ)_/¯

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updates to this mailing list
by Matthew Newville 11 Sep '24

11 Sep '24

Hi Folks, We needed to upgrade the operating system on the machine running this mailing list late last week. That went well, but part of that process involved upgrading the "mailman" software used for this mailing list to the latest version. That upgrade was long overdue (the web pages looked 20 years old because they were) but was also fairly involved. Fortunately, we have great support in our group, and the new mailing list should be running smoothly (if you get this email, that is). A consequence of this change is that many of the links for the mailing list have changed. With recent changes in Argonne National Lab policies, URLs in emails get mangled to have "https://urldefense.us/v3/__https://urldefense.us/v3__;!!G_uCfscf7eWS!e6kk3J… " prefixes. So I apologize for the ugly and long following links: The Main page for this list is at https://urldefense.us/v3/__https://millenia.cars.aps.anl.gov/mailman3/lists… If you had a password for the older list, this did not get moved over. If you want to change your setting, you can just use "Forgot Password" to sign in. The Archives are now at https://urldefense.us/v3/__https://millenia.cars.aps.anl.gov/archives/list/… This is a completely new archive format, but the translation (of about ~10,500 messages) worked reasonably well. Existing links to any older message should redirect to the "top level archiive": we did not try map old message links to new ones or fix any broken links. In addition, the archives at https://urldefense.us/v3/__https://www.mail-archive.com/ifeffit@millenia.ca… should also still works. If you have any questions, please let me know. --Matt

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Save the date: SCC short course at BNL, Nov. 6-8, 2024
by Anatoly Frenkel 21 Aug '24

21 Aug '24

Hello, As a follow up on my previous "save the date" message, the dates of the Synchrotron Catalysis Consortium short course have been finalized (they changed from the previous dates in an attempt to resolve the conflict with other meetings). The final dates are: Nov. 6 (Wed) through Nov. 8 (Fri), 2024. The course will be held at Brookhaven National Laboratory. The course is in the final stage of approvals - after we have it officially approved I will send another update with the course agenda and registration details. Regards, Anatoly ------------------------------------------------------------------- Anatoly I. Frenkel Professor Department of Materials Science and Chemical Engineering (primary appointment) Department of Chemistry (affiliate appointment) *Stony Brook University* Stony Brook, NY 11794 Email: anatoly.frenkel(a)stonybrook.edu <https://urldefense.us/v3/__https://mail.bnl.gov/OWA/redir.aspx?C=F6wCGt4adz… > https://urldefense.us/v3/__http://you.stonybrook.edu/frenkel__;!!G_uCfscf7e… Co-Director and Spokesperson, Synchrotron Catalysis Consortium (SCC) at BNL https://urldefense.us/v3/__http://you.stonybrook.edu/scc2__;!!G_uCfscf7eWS!… Joint Appointment: Senior Chemist Chemistry Division, *Brookhaven National Laboratory* Upton, NY 11973 Email: frenkel(a)bnl.gov https://urldefense.us/v3/__https://www.bnl.gov/staff/frenkel__;!!G_uCfscf7e… ------------------------------------------------------------------- On Fri, May 3, 2024 at 10:58 AM Anatoly Frenkel < anatoly.frenkel(a)stonybrook.edu> wrote: > Dear subscribers: > > Please pass it along to your group members who may be interested in this > opportunity. > In continuation of the annual tradition at the Synchrotron Catalysis > Consortium (SCC) at Brookhaven National Laboratory to organize and run XAFS > short courses there since 2005, we are planning a first specialized course > targeting catalysis and electrocatalysis researchers. The course will > follow a successful model of our XAFS courses: the lectures (on the topics > ranging from in situ/operando characterization and multimodal > instrumentation to data analysis) and software demonstrations on the first > two days, followed by the hands-on data analysis session on the last day. > The program is being finalized, and we are in the process of getting the > necessary approvals from BNL and DOE. In the meantime, please, mark your > calendars and contact me if you have any questions. > > Anatoly > ******** > On sabbatical leave at Weizmann Institute of Science, Israel > ******** > ------------------------------------------------------------------- > Anatoly I. Frenkel > Professor > Department of Materials Science and Chemical Engineering (primary > appointment) > Department of Chemistry (affiliate appointment) > *Stony Brook University* > Stony Brook, NY 11794 > Email: anatoly.frenkel(a)stonybrook.edu > <https://urldefense.us/v3/__https://mail.bnl.gov/OWA/redir.aspx?C=F6wCGt4adz… > > https://urldefense.us/v3/__http://you.stonybrook.edu/frenkel__;!!G_uCfscf7e… > Co-Director and Spokesperson, Synchrotron Catalysis Consortium (SCC) at BNL > https://urldefense.us/v3/__http://you.stonybrook.edu/scc2__;!!G_uCfscf7eWS!… > > Joint Appointment: > Senior Chemist > Chemistry Division, *Brookhaven National Laboratory* > Upton, NY 11973 > Email: frenkel(a)bnl.gov > https://urldefense.us/v3/__https://www.bnl.gov/staff/frenkel__;!!G_uCfscf7e… > ------------------------------------------------------------------- > Anatoly ------------------------------------------------------------------- Anatoly I. Frenkel Professor Department of Materials Science and Chemical Engineering (primary appointment) Department of Chemistry (affiliate appointment) * Stony Brook University * Stony Brook, NY 11794 Email: anatoly.frenkel(a)stonybrook.edu <https://urldefense.us/v3/__https://mail.bnl.gov/OWA/redir.aspx?C=F6wCGt4adz… > https://urldefense.us/v3/__http://you.stonybrook.edu/frenkel__;!!G_uCfscf7e… Co-Director and Spokesperson, Synchrotron Catalysis Consortium (SCC) at BNL https://urldefense.us/v3/__http://you.stonybrook.edu/scc2__;!!G_uCfscf7eWS!… Joint Appointment: Senior Chemist Chemistry Division, *Brookhaven National Laboratory* Upton, NY 11973 Email: frenkel(a)bnl.gov https://urldefense.us/v3/__https://www.bnl.gov/staff/frenkel__;!!G_uCfscf7e… -------------------------------------------------------------------

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Athena .lcf export file
by Miranda Vu 09 Aug '24

09 Aug '24

Hello, I think I may have found an issue in Athena regarding the LCF file export. I have been analyzing data using the LCF section of Athena. Everything looks good on the plot within Athena, but my exported file has my weighted components incorrectly labelled. For example, I have the weighted components in Athena correctly displayed here: [cid:image002.jpg@01DAEA68.340F5790] And an Excel plot of the .lcf export file here where the 3 standards are incorrectly labelled: [cid:image004.png@01DAEA68.340F5790] Has anybody else noticed this or found a solution? I have tried closing and re-opening the file, starting up new athena files, and re-ordering the standards with no luck. Thanks, Miranda

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Looking for Nb K-edge spectrum of Nb2O5
by Jiyun Hong 09 Aug '24

09 Aug '24

Dear all, I'm looking for a XAS spectrum of Nb2O5 at Nb K-edge to use as a bulk standard in XANES analysis. If possible, would anyone on the mailing list be willing to share their data with me? Thank you for your help, Jiyun

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Problem with XRF mapviewer post-update
by Sarah Bowie 02 Aug '24

02 Aug '24

Hi all, Apologies if this has already been asked elsewhere. I have previously been using XRF mapviewer with no issues on my MacBook pro (fully updated). Larch recently prompted me to update to the newest version, and following this, XRF mapviewer seems to be unable to open (tries and then immediately closes without any window ever opening). Oddly, all other programs in the Larch folder still work as normal. I've tried removing Larch, redownloading and reinstalling, and still have the same issue. Any suggestions would be much appreciated - I'm definitely regretting the update currently! I was also curious if there's somewhere I could just download an older Larch version? Thanks in advance, Sarah Bowie PhD student School of Environment, Geography and Geoscience University of Portsmouth, UK

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Periodic boundary condition when generating .inp file and scattering paths in GeSn_Larch
by Anis Attiaoui 29 Jul '24

29 Jul '24

Dear All, While generating the .inp file (attached) of a GeSn DFT structure from a .cif file (attached), I noticed some anomalies in the feff path calculation. In this specific case, we should expect Sn to have 4 nearest neighbors in the first shell. However, when the absorbing (Sn) atom is located on the edge of the supercell, the number of nearest neighbors is reduced to 2, which is non-physical. The DFT structure was generated with periodic boundary conditions (PBC). My question is the following: Is it possible to incorporate the PBC in the feff calculation process to generate the right scattering paths, especially for atoms absorbers located on the edge of the supercell? I wanted to know if there are any option in larch to deal with this specific case. I am attaching the .cif and the current .inp files that I obtained of GeSn structure. Thank you so much for your help. Best regards, Dr. Anis Attiaoui, Stanford University, GLAM Dept. Material Science and Engineering, McCullough Building, 476 Lomita Mall, Stanford California, USA, 94305 Office/shipping: McC-203 Tel: +1(650)485-0501 Web: https://urldefense.us/v3/__https://mcintyre.stanford.edu__;!!G_uCfscf7eWS!e… <https://urldefense.us/v3/__https://mcintyre.stanford.edu/__;!!G_uCfscf7eWS!… >

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How to model the photoexcited charge transfer on FEFF calculation?
by FAN Dongxiao 27 Jul '24

27 Jul '24

Hello, everyone, I am doing the time-resolved XAFS, pump-pulse technique. Sample is Cu2Ti2O5, the absorber is Cu, the scatter is Ti. With photoexcitation, the one electron is excited from Cu site and transfer to neighbor Ti site. My question is how to model this photoexcited charge transfer on the FEFF software? I have tried as below: First method, To separate the absorber Cu and neighbor scattering Ti with other Cu and Ti ions, I create a cluster and modify the POTENTIALS and ION card: POTENTIALS 0 29 Cu (absorber, charge +1) 1 29 Cu 2 22 Ti 3 8 O 4 22 Ti (neighbor scatter, charge -1) ION 0 -1 ION 4 1 The results shows the chi.dat file is same for with or without ION card. Second method, Use the same cluster as the first method and the use the CONFIG card to model the charge transfer: CONFIG card 2 0 Cu Ar 3d 4 6 4s 0 4p 0 #(lost on electron from 4s) 4 Ti Ar 3d 2 0 4s 2 4p 1 #(receive on electron to 4p) But this method gives error before the run. Can some body tell where I am wrong? Best regards, Fan

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