Hello there,

The LBNL has a reference for binding energy at their website. You can find Ni-K edge info here: http://xdb.lbl.gov/Section1/Table_1-1a.htm

In the Farrel-Lytle Database (http://ixs.iit.edu/database/data/Farrel_Lytle_data/RAW/Ni/index.html), you will find an entry for Ni2Si, and there are additional entries in the processed data tree (http://ixs.iit.edu/data/Farrel_Lytle_data/PROCESSED/n/, however with no information, so take care!) for the NiPt, I could not find any entries.

If you have suited samples, we may conduct experiments! Good luck, Dirk

P.S. The data in the Farrel-Lytle database are mostly in the old Stanford/HASYLAB whatever format - if you do not know how to extract the absorption spectrum from those raw data, contact me again, and I may assist! Best regards, Dirk

I don't know how to extract the adsorption spectrum from HASYLAB format, could you tell me how to do?

There are several important informations included in the header, most important are

STPCAL this is the stepper motor count, where energy calibration was performed. If the mono was for example calibrated at the Cu K-edge (ECAL), then this numer corresponds to the energy of the Cu edge.

ECALis the energy of the calibration corresponding to the steps above

DSPACE is the monochromator d-spacing, e.g. 1.63751 for Si(3111) ...

STPDEG are the steps per degree in Bragg angle of the monochromator. Typically, you have values between some few thousands (for old experiments) up to 100000!

With those informations, you should be able to recover the absorption spectrum.

In some cases, you have in addition entries for OFFSET (these are the counter outputs with X-rays off per second of integration time. So you have to subtract those counts multiplied with the time of the integration per data point (SEC - entry).

The rest of the entries may be ignored. Contact me if you need further input, cheers, Dirk

Thanks a lot for your very nice and detailed answer, which encouraged me a lot!

I downloaded a raw data from Farrel-Lytle Database. I guess the data format is not HASYLAB. I tried to open it by Athena, but failed. Could you tell me how to open it?

It seems as if this file is just a row of absorption data. Try to sort it line after line, then you should get the absorption values. But the energy scale? I feel that they started at 12800 eV, which is below the Au L3-edge. But I cannot see any more information about energy steps - are there additional header lines?

Seems as if you need AuCl3 spectrum - see attachment for a XANES measured at the DELTA storage ring ...

Thanks very much. There are not additional header lines in data, but I try to sort the line after line, then make energy steps from 10300 to 12800 eV. Finally, get a reasonable data.

Yes, I really need AuCl3 spectrum, thanks for your help!

Cool - looks as if RG make sense! Have a nice week-end, Dirk