# Bragg diffraction - How to make sense of it ??

by svrphy
Tags: bragg, bragg's law, diffraction, sense, x ray diffraction
 P: 14 Is there a way to make sense of Diffraction of X Rays without taking recourse to oversimplified concepts like "Reflection of X Rays by parallel planes" which is generally the explanation in most basic physics books. It's been a couple years since I first studied it and i continue to get confused by assertions like reflecting of Photons by atoms. Online sources are also full of it : http://www-outreach.phy.cam.ac.uk/ca...raction7_1.htm OR http://chemwiki.ucdavis.edu/Analytic...ragg's_Law
 P: 1,071 You can start with the Laue equations, which are derived from interference principles used in gratings, and derive the Bragg equation from them: http://www.phys.utk.edu/courses/Fall.../chapter1c.pdf Or you can start with the fully quantum mechanical Bloch theorem and derive the Bragg equation: http://www.uni-tuebingen.de/meso/sss...helectrons.pdf But the Bragg equation is very simple, and very accurate, so I have used it extensively in my electron diffraction work.
 P: 14 I get that. But, is there a way to explain things without relying on mathematical formalism. I mean a general discussion on the physical mechanism.
P: 1,071

## Bragg diffraction - How to make sense of it ??

Read chapter two of this dissertation: http://hdl.handle.net/2027.42/63758

It starts with crystal theory, atomic scattering, and elastic scattering from crystals ... in short, a derivation of diffraction patterns starting from scratch.
 P: 628 This article by P. P. Ewald, one of the founding fathers of x-ray diffraction, give an excellent overview without excessive math. http://rmp.aps.org/abstract/RMP/v37/i1/p46_1
P: 14
 Quote by M Quack This article by P. P. Ewald, one of the founding fathers of x-ray diffraction, give an excellent overview without excessive math. http://rmp.aps.org/abstract/RMP/v37/i1/p46_1
Thanks for the link. If you have access, could you pls give me the pdf ?

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