April 2025 - Ifeffit - millenia.cars.aps.anl.gov

Cancellation of the 19th International XAFS conference in 2025 in Chicago
by Matthew Newville 15 Apr '25

15 Apr '25

Hi All, Some of you may not have heard this yet. The International X-ray Absorption Society and the Conference organizers have canceled the XAFS19 Conference scheduled for July 14-19, 2025. From Professor Asakura, Chair of the IXAS: Dear all involved with XAFS, As you may know, the 19th International XAFS conference (XAFS 19) was scheduled to occur in Chicago from the 14th to the 19th of July 2025. After considering the many uncertainties with hosting an international conference in the US given the current political climate, the organizer of the 19-XAFS conference proposed its postponement. The IXAS EC voted on the subject and unanimously voted to cancel the 19-XAFS in Chicago in 2025. We appreciate your kind understanding. We will now call for a bid to host the conference next year, XAFS 2026, and we will decide on the new venue and communicate the decision to the community as soon as possible. Please contact the IXAS chair, Kiyotaka Asakura (kytkaskr(a)fc.ritsumei.ac.jp<mailto:kytkaskr@fc.ritsumei.ac.jp>), if you are interested in organizing the XAFS 2026. Thanks. Kiyotaka Asakura IXAS Chair Carlo Segre Chair of the 19-XAFS Also See XAFS19 homepage https://urldefense.us/v3/__https://www.icdd.com/xafs19/__;!!G_uCfscf7eWS!dg…

1 0

XAS spectra for Na2CoP2O7, Li2CoP2O7, NaCoPO4 and LiCoPO4
by Carlos Triana Estupinan 15 Apr '25

15 Apr '25

Dear Colleagues, I was curious if anyone has XAS spectra for Na2CoP2O7, Li2CoP2O7, NaCoPO4 and LiCoPO4 that you would not mind sharing. Thanks and Best Regards, -- ______________________________________ Phd. - Lic.Phil. - Msc. & Bsc. in Sciences Physics Senior Researcher, University of Zurich Department of Chemistry Winterthurerstrasse 190, CH-8057 Zurich, Switzerland Email: carlos.triana(a)chem.uzh.ch Phone: +41 44 63 54 646 Movil: +41 076 814 41 60 -- *Aviso legal:* El contenido de este mensaje y los archivos adjuntos son confidenciales y de uso exclusivo de la Universidad Nacional de Colombia. Se encuentran dirigidos sólo para el uso del destinatario al cual van enviados. La reproducción, lectura y/o copia se encuentran prohibidas a cualquier persona diferente a este y puede ser ilegal. Si usted lo ha recibido por error, infórmenos y elimínelo de su correo. Los Datos Personales serán tratados conforme a la Ley 1581 de 2012 y a nuestra Política de Datos Personales que podrá consultar en la página web https://urldefense.us/v3/__http://www.unal.edu.co__;!!G_uCfscf7eWS!eoeeN3SW… <https://urldefense.us/v3/__http://www.unal.edu.co/__;!!G_uCfscf7eWS!eoeeN3S… >.* *Las opiniones, informaciones, conclusiones y cualquier otro tipo de dato contenido en este correo electrónico, no relacionados con la actividad de la Universidad Nacional de Colombia, se entenderá como personales y de ninguna manera son avaladas por la Universidad.

2 1

A warning about feff8 vs feff6
by Joshua J. Kas 11 Apr '25

11 Apr '25

Dear ifeffit community, While doing some fitting of theoretically produced data, we noticed that there are some differences between feff6 and feff8, even when all settings are the same as far as we can tell. This was expected for some parameters such as the E0 shift, since the approximation has changed from feff6 to feff8. However, there is also a difference in the scattering amplitudes. In particular, for the Pt case that we are looking at, the nearest neighbor scattering amplitudes from feff8,9, and 10 are roughly 11/12 the size of the scattering amplitudes from feff6. This likely has something to do with a difference in the prescription to create the muffin-tin potentials, but we haven't tracked down the difference completely. In any case, as found by Bruce Ravel <https://urldefense.us/v3/__http://bruceravel.github.io/SCFtests/scf.html__;… >, differences in physical parameters between feff6 and feff8 are within errors of each other when each code is used consistently. This message is mainly meant to warn people not to mix the two codes when doing analysis. For example, an s02 extracted by fitting data with feff6 cannot be used with a feff8 analysis. -- Joshua Kas (He/Him/His) Research Assistant Professor University of Washington

1 0

CLS Introduction to X-ray absorption spectroscopy and microprobe Worksop
by Amani Ebrahim 10 Apr '25

10 Apr '25

Dear Ifeffit community, The CLS is organizing a 2-day workshop/ summer school for new commers to XAS, with a specific focus on topics such as food, soil and environmental science (see following link<https://urldefense.us/v3/__https://event.fourwaves.com/cls-xas-workshop/pag… >). Please help disseminate amongst your network. Deadline to apply is May 15. For details on the workshop, please visit: Intro to XAS and microprobe workshop<https://urldefense.us/v3/__https://event.fourwaves.com/cls-xas-workshop/pag… > Thank you from the workshop organizers ----------------------------------------------- Amani M. Ebrahim, PhD (She/Her) Associate Scientist | Canadian Light Source Ph: 306-657-3659 | C: 306-227-7228 https://urldefense.us/v3/__https://bioxas-spectroscopy.lightsource.ca/__;!!… lightsource.ca<https://urldefense.us/v3/__https://www.lightsource.ca/__;!!G_uCfscf7eWS!c8d… > | @canlightsource [AE4A24CF] [5A8E16B5][12A76F8B][601FFCD1][8CA6807][EDA296AD][CF6D0A43] We acknowledge we are on Treaty Six territory and the traditional homeland of the Métis. We pay our respects to the First Nations and Métis ancestors of this place and reaffirm our relationship with one another.

1 0

Delete me
by Richard Brand 01 Apr '25

01 Apr '25

Von meinem iPad gesendet New iPhone +49 159 06238965 New eMail brand.richard(a)web.de

1 0