Re: [Ifeffit] No Reference Foil

2016-07-13 Thread Matthew Marcus
Just a caveat - CeO2 and Ce(OH)4 have XANES which isn't quite the same as other Ce4+. There's a shoulder on the low side, as if it were slightly reduced, and the first peak is at a slightly different position. Of course, you can use LCF with CeO2 as one of the refs if you need to.

[Ifeffit] No Reference Foil

2016-07-13 Thread fred.mosselmans
Dear Neil, Sorry this may be too exact an interpretation of your English, but if you are looking at the exafs then calibration is normally pretty irrelevant as long as it is not wildly out, as you refine E0 anyway in the fitting. The bond distances will be very little altered by this. If you

[Ifeffit] No Reference Foil

2016-07-12 Thread Ritimukta Sarangi
Hello Neil, I guess you might have tried this already - do you have any signatures in the I0 data? Such as a glitch or any other edge absorption. Sometimes these can be used as “internal calibration”. -Riti Sarangi > On Jul 12, 2016, at 2:54 PM, Neil M Schweitzer >

[Ifeffit] No Reference Foil

2016-07-12 Thread Neil M Schweitzer
Hello, Long time follower/user and first time subscriber! I work at Northwestern University, and one of the services I provide is analyzing XAS data for users who collect data at APS. Generally, I am not at APS to help them collect spectra, I help analyze the data afterwards. A user came to me