Dear researchers, in my EDX spectra there is peak of Al and Mo though I don't use any material related these elements peaks in my sample, I think it will be impurity peaks. but I performed the experiment very hygienically.
Dear Yaseen Muhammad ,
you should share your spectra and the elements, which you expect to be present in your sample as well as the excitation energy.
After that it is much easier to play around with possible peaks superpositions and even sum peaks...
Thanks in advance and
best regards
G.M.
I have encountered lines of elements that were definitely not part of the samples when the surface of the sample was uneven. If it is inclined to the plane of the holder or if there is a strong roughness.
Dear Alexander N Titov , how can you explaing your results? Of course Al is usually used for specimen stubs, but what about other elements you have observed?
Dear Yaseen Muhammad , if you really want to get some advice, you should post your spectrum.
Dear Vladimir Dusevich, I don't have a good explanation. But it is possible that this is the result of the Bragg reflection of the characteristic radiation in the sample. Of course, true diffraction requires a much shorter wavelength. However, in difficult terrain, sliding corners may occur. This generates line noise, which the detector takes for element lines. I realize this is a bad explanation, but the fact is that this effect is sometimes observed.
There are such things as sum and escape peaks - usual EDS artefacts.
https://www.globalsino.com/EM/page3803.html
https://www.globalsino.com/EM/page3804.html
Dear researchers, please check attached file of EDS and give me comprehensive answer about Al and Mo peaks
Since Al was detected only in one spectrum, it could be a bit if radiation from an aluminum specimen stub (and one spectrum per condition is never enough). As for Mo, you may want to check two things. First, acquire spectrum at 25 kV, it will show Mo K lines (if any). Second, acquire spectrum of pure "x", to see its composition. By the way, on your spectrum for "2% x" condition Tl line is marked as second (!) CaK line.
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