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 Author Topic: Bragg's Law and Diffraction  (Read 10830 times) 0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
ahmedelshfie
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 « Embed this message on: April 09, 2010, 07:00:55 pm » posted from:,,Brazil

This applet created by Prof Hwang
Modified Interface by my self
Original simulation:Bragg's Law and Diffraction

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 Bragg's.jpg (35.27 KB, 747x407 - viewed 818 times.)  Bragg's Law and Diffraction.jpg (82.58 KB, 720x418 - viewed 3206 times.) « Last Edit: April 14, 2010, 01:41:26 am by ahmedelshfie » Logged
ahmedelshfie
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 « Embed this message Reply #1 on: June 26, 2010, 12:41:53 am » posted from:SAO PAULO,SAO PAULO,BRAZIL

Bragg diffraction (also referred to as the Bragg formulation of X-ray diffraction) was first proposed by William Lawrence Bragg and William Henry Bragg in 1913 in response to their discovery that crystalline solids produced surprising patterns of reflected X-rays (in contrast to that of, say, a liquid). They found that in these crystals, for certain specific wavelengths and incident angles, intense peaks of reflected radiation (known as Bragg peaks) were produced. The concept of Bragg diffraction applies equally to neutron diffraction and electron diffraction processes.
W. L. Bragg explained this result by modeling the crystal as a set of discrete parallel planes separated by a constant parameter d. It was proposed that the incident X-ray radiation would produce a Bragg peak if their reflections off the various planes interfered constructively.
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