On 05/30/2016 02:20 AM, mazhar iqbal wrote:
I want to ask about the aligning the XAS spectra that is given in Athena. Can we do the alignment of time resolved spectra? As you know that the resolved spectra (IR pump X-ray probe) may have edge shift due to laser pumping. Do you think that the same method of the alignment can be applied here as well. An additional piece of information is that we have a reference fluorescence line always on the screen that well behind the K absorption edge.
Well, you have told us what you have tried nor what problem you are actually facing. If the question is "does Athena help you align data?" I think you already know that the answer is yes. I don't understand the business about a "fluorescence line always on the screen". How do you propose to use that to align your XAS data? In the case of a situation where you are purposefully changing the chemical state of the sample, then you need to have some absolute reference by which to perform the alignment -- a reference spectrum measured simultaneously, an encoder reading on the monochromator, something that allows you to do the chore. You question is a bit vague and open-ended. Without more information or a more focused question, I don't know how to help you further. B -- Bruce Ravel ------------------------------------ bravel@bnl.gov National Institute of Standards and Technology Synchrotron Science Group at NSLS-II Building 535A Upton NY, 11973 Homepage: http://bruceravel.github.io/home/ Software: https://github.com/bruceravel Demeter: http://bruceravel.github.io/demeter/