Re: [Ifeffit] Ke

Either way is fine but I would suggest taht you not use the calibrate function, just read off the zero crossing and put it into the E0 location. Calibrate actually shifts the data and that is not necessarily what you want to do, particularly if you are comparing spectra.. Carlo On Thu, 16 Oct 2014, Pushkar wrote:

Dear Ke Is there a reason you use first derivative?? I thought if you take second derivative on Athena and then click find zero and then calibrate that value is the correct way. I am learning XAFS myself for the first time and I am novice too. So may be I make no sense but just want to confirm if I am not doing anything wrong. What's your stake in this?? Pushkar

Pushkar Shejwalkar Post-doctoral researcher, JSPS fellow, Catalysis Research Center Hokkaido University, Sapporo Japan-0010020

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On १६ ऑक्टो, २०१४, at १२:२७ म.पू., Ke Yuan wrote:

Hello Sin Yuen,

Thanks for forwarding me that study materials on E0.

I use Athena to find the highest peak on the fist derivative of the spectra and pick that value as E0. I think I did not put E0 above this value. I will try to put it on the high energy side to see what will happen.

Tks! Ke

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-- Carlo U. Segre -- Duchossois Leadership Professor of Physics Director, Center for Synchrotron Radiation Research and Instrumentation Illinois Institute of Technology Voice: 312.567.3498 Fax: 312.567.3494 segre@iit.edu http://phys.iit.edu/~segre segre@debian.org