Is There a Difference in X-ray Spectra from Photon-in vs Electron-in?

[valerie.p]

Hi
I'm studying physical engineering (i'm italian, sorry for my english
I've a question about X ray spectra.

Now, both photon and electron can create a hole in a core level
and the photoelectric effect (photoemission) refers only to the first case, right? (and the ejected electron is called photoelectron )

after the creation of the hole the atom rearranges in order to return to its ground state, going through what is called "relaxation"
- through Auger electron emission (->aes)
- through X ray fluorescence

consider the latter. now you can obtain an x ray spectrum ..
the point is: is there any difference in the xray spectra obtained from the relaxation after the hole creation by "photon in" or "electron in" ?
(maybe the bremsstrahlung background.. )

thanks

Valeria

 

[BigJDubs]

Yes, there is a difference in the X-ray spectra obtained from relaxation after the hole creation by "photon in" or "electron in". The X-ray spectra obtained from the relaxation after the hole created by photon will have a much higher peak due to the photoelectric effect. On the other hand, the X-ray spectra obtained from the relaxation after the hole created by electron will have a much lower peak due to the Auger effect. In addition, the X-ray spectra obtained from the relaxation after the hole created by electron will have a much higher background due to the Bremsstrahlung radiation.