X-ray interactions?

[Miss Perfect]

What are the interactions of x-ray of angstroms wavelength with matter?

[Klaynos]

The first thing you need to do is consider what energy the x-rays have, and then what that energy could relate to in different materials...

[Miss Perfect]

The photon energy related to an angstrom wavelength is in ev range . I guess the dominant interaction in that area must be photoelectric, eh? Or is that thmson and reily scattering?

[Kaeroll]

I'm no physicist but x-rays can interact with electrons via diffraction. Handy for resolving crystal structures.

[swansont]

The photon energy related to an angstrom wavelength is in ev range . I guess the dominant interaction in that area must be photoelectric, eh? Or is that thmson and reily scattering?

 

hc = 1240 eV nm, so the energy is going to be tens of keV. Photoelectric effect and Compton scattering.

[Miss Perfect]

Thank you!

[morganparkar]

Hi Friend,

 

one of several possible interactions that can occur between the atoms of an object and an incident X-ray. The interactions nearly all consist of interactions with the electron cloud around the atom. At the energies used in diagnostic imaging, only two types of interactions occur, scattering or absorption. In absorption, all of the X-ray energy is taken up by the atom and is transferred to an electron, which is ejected from the atom.

 

Thanks

[swansont]

Hi Friend,

 

one of several possible interactions that can occur between the atoms of an object and an incident X-ray. The interactions nearly all consist of interactions with the electron cloud around the atom. At the energies used in diagnostic imaging, only two types of interactions occur, scattering or absorption. In absorption, all of the X-ray energy is taken up by the atom and is transferred to an electron, which is ejected from the atom.

 

Thanks

 

 

That describes Compton Scattering and the Photoelectric effect.