X-ray Diffraction: Crystal Structure vs. Electric Dipole

[whatisreality]

When x-rays are incident on a crystal structure, do they diffract in the same way as light through a diffraction grating?
On the one hand, I've read that a crystal structure acts like a 3D diffraction grating. On the other hand, I have been told that x-rays induce an electric dipole moment in the scatterer, which then acts like an antenna and emits scattered waves.
I don't understand the second statement, but I feel like they're saying completely different things anyway.

 

[davenn]

typing how does X-ray diffraction work? into google
came up with lots of links like this one

http://www.chem.sc.edu/faculty/zurloye/xrdtutorial_2013.pdf

I will let you look through others

cheers
Dave